CN217848073U - Electrolyte additive recovery system - Google Patents
Electrolyte additive recovery system Download PDFInfo
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- CN217848073U CN217848073U CN202221529897.3U CN202221529897U CN217848073U CN 217848073 U CN217848073 U CN 217848073U CN 202221529897 U CN202221529897 U CN 202221529897U CN 217848073 U CN217848073 U CN 217848073U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y02W30/84—Recycling of batteries or fuel cells
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Abstract
The embodiment of the application relates to electrolyte additive retrieves technical field, in particular to electrolyte additive recovery system, includes: the drying device is provided with a first opening, and the first opening is used for discharging the dried electrolyte additive; screening plant, be equipped with the screen cloth in the screening plant, the screen cloth is with the inside second cavity that divides into first cavity and be located first cavity below of screening plant, screening plant has screening feed inlet and first screening discharge gate, the screening feed inlet is located the lateral wall of first cavity, first screening discharge gate is located the lateral wall of second cavity, wherein, first cavity is used for via screening feed inlet, first opening and the inside intercommunication of drying device, first screening discharge gate is used for discharging the undersize result. The electrolyte additive recovery system provided by the embodiment of the application can improve the purity of the recovered ODFB.
Description
Technical Field
The embodiment of the application relates to the technical field of electrolyte additive recovery, in particular to an electrolyte additive recovery system.
Background
In order to improve the energy utilization efficiency and reduce the pollution of the electrolyte additive to the environment. The organic solvent in the electrolyte additive is usually separated from lithium difluorooxalato borate (ODFB), and the organic solvent and ODFB are recovered respectively, thereby realizing the recovery of the electrolyte additive.
At present, when the electrolyte additive is recovered, a dryer is used for drying the electrolyte additive, so that an organic solvent in the electrolyte additive is evaporated to recover the evaporated organic solvent, and after the organic solvent in the electrolyte additive is evaporated, the remaining electrolyte additive is recovered as ODFB.
The inventor of the present application finds that, at present, when the electrolyte additive is recovered, when the electrolyte additive is dried to recover the organic solvent, the organic solvent in the electrolyte additive cannot be completely evaporated, and at this time, when the dried electrolyte additive is recovered as ODFB, the recovered ODFB has a low purity because the dried electrolyte additive also has more organic solvent.
Therefore, it is desirable to provide an electrolyte additive recycling system to increase the purity of the recycled ODFB.
SUMMERY OF THE UTILITY MODEL
An object of this application embodiment is to provide an electrolyte additive recovery system to promote the purity of the ODFB who retrieves.
In order to solve the above problem, an embodiment of the present application provides an electrolyte additive recovery system, including: the drying device is used for drying the electrolyte additive and is provided with a first opening used for discharging the dried electrolyte additive; the screening device is provided with a screening material inlet and a first screening material outlet, the screening material inlet is located on the side wall of the first cavity, the first screening material outlet is located on the side wall of the second cavity, the first cavity is used for communicating with the inside of the drying device through the screening material inlet and the first opening, and the first screening material outlet is used for discharging undersize products.
The embodiment of this application provides an electrolyte additive recovery system includes: the drying device is used for drying the electrolyte additive and is provided with a first opening used for discharging the dried electrolyte additive; the screening device is provided with a screening material inlet and a first screening material outlet, the screening material inlet is located on the side wall of the first cavity, the first screening material outlet is located on the side wall of the second cavity, the first cavity is used for communicating with the inside of the drying device through the screening material inlet and the first opening, and the first screening material outlet is used for discharging undersize products. Therefore, after the electrolyte additive is dried by the dryer, the dried electrolyte additive is further screened by the screening device, so that the content of the organic solvent in the undersize product is ensured to be low or even not to contain the organic solvent, and the purity of the recovered ODFB can be improved when the undersize product is recovered as the ODFB.
In addition, the screening device also has a second screening outlet located on the side wall of the first chamber for discharging the oversize product.
In addition, the system further comprises: the feed bin, the feed bin has the feed bin feed inlet, and the feed bin is used for via feed bin feed inlet, first screening discharge gate and second cavity intercommunication.
In addition, a filter screen is arranged in the drying device, the filter screen divides the interior of the drying device into a third chamber and a fourth chamber, the first opening is located on the side wall of the third chamber, the drying device is further provided with a liquid outlet located on the side wall of the fourth chamber, the drying device is used for filtering the electrolyte additive and drying the filtered electrolyte additive, the drying device has a first working state and a second working state, and the drying device is configured to be capable of being switched between the first working state and the second working state; when the drying device is in the first working state, the third chamber is positioned above the fourth chamber; when the drying device is in the second working state, the fourth chamber is positioned above the third chamber.
In addition, the system further comprises: the filtering device is internally provided with a filter screen, the filter screen divides the interior of the filtering device into a third chamber and a fourth chamber, the filtering device is provided with a second opening positioned on the side wall of the third chamber and a liquid outlet positioned on the side wall of the fourth chamber, the second opening is used for discharging filtered electrolyte additives, the filtering device is provided with a first working state and a second working state, and the filtering device is configured to be capable of being switched between the first working state and the second working state; when the filtering device is in the first working state, the third chamber is positioned above the fourth chamber; when the filtering device is in a second working state, the fourth chamber is positioned above the third chamber; the drying device is used for drying the filtered electrolyte additive.
In addition, the system further comprises: the solvent recovery tank is provided with a recovery feed port and is communicated with the fourth cavity through the recovery feed port and a liquid outlet.
In addition, the drying device is a rotary vacuum dryer.
In addition, the rotary vacuum dryer comprises a heater and an air extractor, wherein the heater is used for heating the electrolyte additive in the drying device, and the air extractor is used for extracting gas evaporated by the electrolyte additive when the drying device dries the electrolyte additive.
In addition, the system further comprises: the protective gas inlet device and the protective gas outlet device are communicated with the inside of the drying device and/or the inside of the screening device, the protective gas inlet device is used for introducing protective gas into the inside of the drying device and/or the inside of the screening device, and the protective gas outlet device is used for discharging gas in the inside of the drying device and/or the inside of the screening device.
In addition, the first opening is also used for feeding materials into the drying device; or the drying device is also provided with a second opening, and the second opening is used for feeding materials into the drying device.
Drawings
FIG. 1 is a schematic view of an electrolyte additive recovery system according to an embodiment of the present disclosure;
fig. 2 is a schematic view of an electrolyte additive recovery system provided in an embodiment of the present application in another state.
Detailed Description
The embodiment of this application provides an electrolyte additive recovery system, includes: the drying device is used for drying the electrolyte additive and is provided with a first opening used for discharging the dried electrolyte additive; screening plant, be equipped with the screen cloth in the screening plant, the screen cloth is with the inside second cavity that divides into first cavity and be located first cavity below of screening plant, screening plant has screening feed inlet and first screening discharge gate, the screening feed inlet is located the lateral wall of first cavity, first screening discharge gate is located the lateral wall of second cavity, wherein, first cavity is used for via screening feed inlet, first opening and the inside intercommunication of drying device, first screening discharge gate is used for discharging the undersize result. Therefore, after the electrolyte additive is dried by the dryer, the dried electrolyte additive is further screened by the screening device, so that the content of the organic solvent in the undersize product is ensured to be low or even not to contain the organic solvent, and the purity of the recovered ODFB can be improved when the undersize product is recovered as the ODFB.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following describes each embodiment of the present application in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in various embodiments of the present application in order to provide a better understanding of the present application. However, the technical means claimed in the present application can be realized by various changes and modifications of the following embodiments.
Referring to fig. 1 and 2, an electrolyte additive recovery system according to an embodiment of the present disclosure includes: the drying device 1, the drying device 1 is used for drying the electrolyte additive, the drying device 1 has a first opening 11, the first opening 11 is used for discharging the dried electrolyte additive; screening plant 2 is equipped with screen cloth 21 in the screening plant 2, screen cloth 21 divides screening plant 2 inside into first cavity and the second cavity that is located first cavity below, screening plant 2 has screening feed inlet 22 and first screening discharge gate 23, screening feed inlet 22 is located the lateral wall of first cavity, first screening discharge gate 23 is located the lateral wall of second cavity, wherein, first cavity is used for passing through screening feed inlet 22, first opening 11 and drying device 1 inside intercommunication, first screening discharge gate 23 is used for discharging the undersize product.
Specifically, the inventors of the present invention have found that the electrolyte additive dried by the drying device 1 is a granular solid with different sizes, and the large granular solid may be formed by binding ODFB, which should originally be dispersed into small granular solids, into the large granular solid due to the large amount of organic solvent and acidic medium contained in the large granular solid. In the embodiment of the application, the dried electrolyte additive is screened by the screening device, so that large-particle solids containing more organic solvents form oversize products, while small-particle solids containing less or no organic solvents form undersize products, and at the moment, the purity of the recovered ODFB can be improved when the undersize products are recovered as the ODFB.
Further, the screening device 2 also has a second screening outlet 24 located on the side wall of the first chamber, the second screening outlet 24 being used to discharge the oversize product. In this way, the oversize product formed by large particle solids containing more organic solvent can be discharged through the second screen discharge 24. Thereafter, the discharged oversize product may be recovered again to separate the organic solvent and ODFB in the oversize product and recover the organic solvent and ODFB in the oversize product, respectively.
Still further, the system further comprises: the feed bin 3, feed bin 3 have a feed bin feed inlet 31, and feed bin 3 is used for communicating with the second chamber via feed bin feed inlet 31, first screening discharge 23. In this way, the undersize product formed by the small solid particles with less or no organic solvent screened by the screening device 2 can enter the silo 3 through the first screening discharge port 23 and the silo feed port 31 to collect the undersize product.
It should be noted that in other alternative embodiments, the system may include another bin (not shown) in communication with the first chamber such that oversize product is collected by the other bin.
In this embodiment, a filter screen 12 is disposed in the drying device 1, the filter screen 12 divides the inside of the drying device 1 into a third chamber and a fourth chamber, the first opening 11 is located on a side wall of the third chamber, the drying device 1 further has a liquid outlet 13 located on a side wall of the fourth chamber, the drying device 1 is configured to filter the electrolyte additive and dry the filtered electrolyte additive, the drying device 1 has a first working state and a second working state, and the drying device 1 is configured to be switchable between the first working state and the second working state; when the drying device 1 is in the first working state, the third chamber is positioned above the fourth chamber; when the drying apparatus 1 is in the second operating state, the fourth chamber is located above the third chamber.
Thus, the drying device 1 can be used to filter the electrolyte additive, so as to filter out the organic solvent in the electrolyte additive. When the electrolyte additive is filtered, after the electrolyte additive is placed in the third chamber, the drying device 1 can be in the first working state, so that the organic solvent in the electrolyte additive is filtered into the fourth chamber through the filter screen 12 and is discharged through the liquid outlet 13.
In addition, since the solid content of the electrolyte additive reaches 50%, the viscosity is extremely high, and the filtering difficulty is high, when the first filtering is performed, the solid of the electrolyte additive on the bottom layer easily blocks the filter screen 12, so that the electrolyte additive on the upper portion is not easily filtered, and therefore, the drying device 1 can be in the second working state, and the solid-liquid mixed state electrolyte additive which is not filtered is subjected to solid-liquid layering again. After that, the drying device 1 is set in the first working state, and the electrolyte additive is filtered for the second time.
Preferably, the number of times of filtering the electrolyte additive using the drying device 1 is 5, in which case sixty to seventy percent of the organic solvent in the electrolyte additive is surely filtered out.
In other alternative embodiments, the system may further comprise: a filtering device (not shown in the figure), wherein a filter screen is arranged in the filtering device, the filter screen divides the interior of the filtering device into a third chamber and a fourth chamber, the filtering device is provided with a second opening positioned on the side wall of the third chamber and a liquid outlet positioned on the side wall of the fourth chamber, the second opening is used for discharging filtered electrolyte additives, the filtering device is provided with a first working state and a second working state, and the filtering device is configured to be switched between the first working state and the second working state; when the filtering device is in the first working state, the third chamber is positioned above the fourth chamber; when the filtering device is in a second working state, the fourth chamber is positioned above the third chamber; the drying device is used for drying the filtered electrolyte additive.
Thus, the electrolyte additive can be filtered by the filtering device. The method for filtering the electrolyte additive by using the filtering device is similar to the method for filtering the electrolyte additive by using the drying device 1, and is not described herein again.
Further, the system further comprises: the solvent recovery tank 4, the solvent recovery tank 4 has a recovery feed inlet 41, and the solvent recovery tank 4 is used for communicating with the fourth chamber through the recovery feed inlet 41 and the liquid outlet 13. In this way, the organic solvent filtered out from the electrolyte additive can be recovered by the solvent recovery tank 4.
Preferably, the drying device 1 is a rotary vacuum dryer. In this embodiment, the drying device 1 is a double-cone rotary vacuum dryer, and in this case, the first opening 11 and the liquid outlet 13 may be respectively disposed at two cone ends of the double-cone rotary vacuum dryer.
Further, in the present embodiment, the rotary vacuum dryer includes a heater for heating the electrolyte additive in the drying device 1, and an air extractor 14 for extracting the gas evaporated from the electrolyte additive when the drying device 1 dries the electrolyte additive.
Specifically, in this embodiment, the heater includes a heat conduction liquid inlet 15 and a heat conduction liquid outlet 16, the heat conduction liquid inlet 15 leads heat conduction liquid into the interlayer of the drying device 1, and the heat conduction liquid outlet 16 is used for discharging heat conduction liquid in the interlayer of the drying device 1, so that the drying device 1 can be heated by using the heat conduction liquid, and the organic solvent in the electrolyte additive in the drying device 1 is heated and evaporated. At this time, the evaporated organic solvent is extracted by the air extractor 14 and recovered by the cooling device (not shown) and the solvent recovery tank 4 or another solvent recovery tank (not shown).
Further, the system further comprises: the device comprises a protective gas inlet device 5 and a protective gas outlet device 6, wherein the protective gas inlet device 5 and the protective gas outlet device 6 are communicated with the inside of the drying device 1 and/or the inside of the screening device 2, the protective gas inlet device 5 is used for introducing protective gas into the inside of the drying device 1 and/or the inside of the screening device 2, and the protective gas outlet device 6 is used for discharging gas in the inside of the drying device 1 and/or the inside of the screening device 2.
In the present embodiment, the shielding gas inlet means 5 and the shielding gas outlet means 6 communicate with the inside of the drying device 1 and the inside of the sieving means 2. Therefore, before the drying device 1 is used for drying and/or filtering the electrolyte additive, the gas in the drying device 1 can be fully protective gas by the protective gas inlet device 5 and the protective gas outlet device 6, and thus, when the drying device 1 is used for drying the electrolyte additive, the electrolyte additive and other gases are subjected to chemical reaction to generate explosion. In addition, before utilizing screening plant 2 to screen the electrolyte additive after the drying, usable protective gas inlet unit 5 and protective gas outlet means 6 make the gas in screening plant 2 be protective gas entirely, so, when can avoiding screening plant 2 to screen the electrolyte additive after the drying, the electrolyte additive after the drying takes place chemical reaction and then produces the explosion with other gas. In one embodiment, the shielding gas is nitrogen.
Preferably, in this embodiment, the shielding gas outlet device 6 is communicated with the outside through the tail gas treatment unit 7.
In addition, in this embodiment, the shielding gas inlet device 5 and the shielding gas outlet device 6 are further communicated with the interior of the storage bin 3 and the interior of the solvent recovery tank 4, and are used for introducing the shielding gas into the storage bin 3 and the interior of the solvent recovery tank 4, so as to prevent the electrolyte additive from generating chemical reaction with other gases when being located in the storage bin 3 and the solvent recovery tank 4, and further generating explosion.
In this embodiment, the first opening 11 is also used for feeding into the drying apparatus 1. In other alternative embodiments, the drying device 1 also has a second opening (not shown in the figures) for feeding into the drying device 1.
In addition, in the present embodiment, the drying device 1 is further provided with an evacuation tube 17, and the evacuation tube 17 is used for evacuating the gas in the drying device 1, so that the inside of the drying device 1 can be in a vacuum state.
Further, in this embodiment, the drying device 1 is further provided with a first valve 18 and a second valve 19, the first valve 18 is used for enabling the first opening 11 to be in an open or closed state, and the second valve 19 is used for enabling the liquid outlet 13 to be in an open or closed state.
Further, in this embodiment, the system further includes: a first hose 8 connecting the first opening 11 with the screen feed opening 22, and a second hose 9 connecting the discharge opening 13 with the recovery feed opening 41. Thus, the first chamber can be communicated with the inside of the drying device 1 through the screening feed port 22 and the first opening 11 by the first hose 8, and the solvent recovery tank 4 can be communicated with the fourth chamber through the recovery feed port 41 and the liquid outlet 13 by the second hose 9.
An embodiment of the present application provides a method for recycling an electrolyte additive, which is applied to the electrolyte additive recycling system of the first embodiment, and includes:
s1: and filtering the electrolyte additive by using a drying device or a filtering device to filter out the organic solvent in the electrolyte additive.
Utilize drying device or filter equipment to filter the electrolyte additive, specifically include: placing the electrolyte additive into the third chamber, and positioning the third chamber above the fourth chamber to perform first filtration on the electrolyte additive; recovering the organic solvent filtered from the electrolyte additive in the fourth chamber; and (3) enabling the fourth chamber to be located above the third chamber, and enabling the third chamber to be located above the fourth chamber after a preset time so as to filter the electrolyte additive for the second time.
In this example, the electrolyte additive was filtered using a drying device. Further, in this step, before the electrolyte additive is filtered, the communication between the drying device and the screening device is cut off. Specifically, the communication between the drying device and the screening device is cut off through a first valve. In addition, when the organic solvent filtered out from the electrolyte additive in the fourth chamber is recovered, the fourth chamber is communicated with the solvent recovery tank. Specifically, when the organic solvent in the fourth chamber is recovered, the drying device is communicated with the solvent recovery tank through the second valve.
Before the step, the protective gas may be filled into the drying device and the solvent recovery tank through the protective gas inlet device and the protective gas outlet device, so as to prevent the electrolyte additive from undergoing a chemical reaction with other gases and further causing an explosion when the drying device and the solvent recovery tank are in use.
S2: and drying the electrolyte additive by using a drying device.
Before the drying device is used for drying the electrolyte additive, the communication between the drying device and the solvent recovery tank can be disconnected. In addition, after the drying device is disconnected, the vacuum state in the drying device can be achieved through the vacuumizing tube, and therefore the situation that when the drying device is used, the electrolyte additive and other gases are subjected to chemical reaction and then explode is avoided.
Specifically, when the drying device is used for drying the electrolyte additive, the electrolyte additive is heated by the heater, and the organic solvent evaporated in the drying process is extracted by the air extractor. For the heating method of the heater to heat the electrolyte additive and the extraction method of the air extractor to extract the organic solvent evaporated during the drying process, reference may be made to the first embodiment, which is not described herein again.
Further, when drying, accessible rotation drying device to avoid the electrolyte additive to cohere on drying device's inner wall.
S3: screening the dried electrolyte additive by using a screening device to obtain an undersize product; and recovering undersize products through a first screening discharge hole.
Specifically, after the drying is accomplished, first opening links to each other through first hose and screening device's screening feed inlet, at this moment, still let in protective gas replacement air in to screening feed inlet and the feed bin, protective gas finally discharges through tail gas processing unit, after the gas replacement is accomplished, open first valve, make the electrolyte additive after the drying get into screening device through first opening and screening feed inlet, the electrolyte additive after the drying carries out vibratory screening in screening device, the undersize result gets into in the feed bin through first screening discharge gate and feed bin feed inlet. At this point, the oversize product may be discharged through a second screen discharge, after which the oversize product may be dissolved again, filtered and dried.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of implementations of the present application, and that various changes in form and details may be made therein without departing from the spirit and scope of the present application. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the application, and it is intended that the scope of the application be limited only by the claims appended hereto.
Claims (10)
1. An electrolyte additive recovery system, comprising:
a drying device for drying the electrolyte additive, the drying device having a first opening for discharging the dried electrolyte additive;
the screening device is characterized by comprising a screening device, wherein a screen is arranged in the screening device, the screen divides the inside of the screening device into a first cavity and is located in a second cavity below the first cavity, the screening device is provided with a screening feed inlet and a first screening discharge outlet, the screening feed inlet is located on the side wall of the first cavity, the first screening discharge outlet is located on the side wall of the second cavity, the first cavity is used for passing through the screening feed inlet, a first opening is communicated with the inside of the drying device, and the first screening discharge outlet is used for discharging undersize products.
2. The system of claim 1, wherein the screening device further has a second screen outlet located on a side wall of the first chamber, the second screen outlet for discharging oversize product.
3. The system of claim 1, further comprising: the feed bin, the feed bin has the feed bin feed inlet, the feed bin is used for via the feed bin feed inlet first screening discharge gate with the second chamber intercommunication.
4. The system of claim 1, wherein a filter screen is disposed in the drying device, the filter screen divides the interior of the drying device into a third chamber and a fourth chamber, the first opening is located on a side wall of the third chamber, the drying device further has a liquid outlet located on a side wall of the fourth chamber, the drying device is configured to filter the electrolyte additive and dry the filtered electrolyte additive, the drying device has a first operating state and a second operating state, and the drying device is configured to be switchable between the first operating state and the second operating state; when the drying device is in a first working state, the third chamber is positioned above the fourth chamber; when the drying device is in a second working state, the fourth chamber is positioned above the third chamber.
5. The system of claim 1, further comprising: the filtering device is internally provided with a filter screen, the filter screen divides the interior of the filtering device into a third chamber and a fourth chamber, the filtering device is provided with a second opening positioned on the side wall of the third chamber and a liquid outlet positioned on the side wall of the fourth chamber, the second opening is used for discharging filtered electrolyte additives, the filtering device is provided with a first working state and a second working state, and the filtering device is configured to be switchable between the first working state and the second working state; when the filtering device is in a first working state, the third chamber is positioned above the fourth chamber; when the filtering device is in a second working state, the fourth chamber is positioned above the third chamber; the drying device is used for drying the filtered electrolyte additive.
6. The system of claim 4 or 5, further comprising: the solvent recovery tank, the solvent recovery tank has the recovery feed inlet, the solvent recovery tank be used for via retrieve the feed inlet the liquid outlet with fourth cavity intercommunication.
7. The system of claim 1, wherein the drying device is a rotary vacuum dryer.
8. The system of claim 7, wherein the rotary vacuum dryer comprises a heater for heating the electrolyte additive located within the drying device and an aspirator for extracting gas evaporated from the electrolyte additive when the drying device is drying the electrolyte additive.
9. The system of claim 1, further comprising: protective gas inlet unit and protective gas outlet means, protective gas inlet unit and protective gas outlet means with drying device's inside and/or screening plant's inside intercommunication, protective gas inlet unit be used for to drying device's inside and/or screening plant's inside lets in protective gas, protective gas outlet means is used for discharging drying device's inside and/or screening plant's inside gas.
10. The system of claim 1, wherein the first opening is further for feeding into the drying device; or the drying device is also provided with a second opening, and the second opening is used for feeding materials into the drying device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221529897.3U CN217848073U (en) | 2022-06-16 | 2022-06-16 | Electrolyte additive recovery system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221529897.3U CN217848073U (en) | 2022-06-16 | 2022-06-16 | Electrolyte additive recovery system |
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| CN217848073U true CN217848073U (en) | 2022-11-18 |
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| CN202221529897.3U Active CN217848073U (en) | 2022-06-16 | 2022-06-16 | Electrolyte additive recovery system |
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Effective date of registration: 20221228 Address after: I-13, 3rd Floor, No. 18, Lane 945, Changta Road, Shihudang Town, Songjiang District, Shanghai, 201617 Patentee after: Shanghai Sensong Engineering Technology Co.,Ltd. Address before: 226532 Jiangsu, Nantong, Rugao, Changjiang town (Rugao port area) 1 Patentee before: MORIMATSU (JIANGSU) HEAVY INDUSTRY Co.,Ltd. |
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