CN209378812U - A kind of hollow fiber composite membrane preparation facilities - Google Patents
A kind of hollow fiber composite membrane preparation facilities Download PDFInfo
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- CN209378812U CN209378812U CN201821862321.2U CN201821862321U CN209378812U CN 209378812 U CN209378812 U CN 209378812U CN 201821862321 U CN201821862321 U CN 201821862321U CN 209378812 U CN209378812 U CN 209378812U
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Abstract
The utility model provides a kind of hollow fiber composite membrane preparation facilities: the control system including unreeling structure, guiding mechanism, rolling-up mechanism, at least one set of reactive tank being arranged between the unreeling structure and rolling-up mechanism, the post-processing mechanism being arranged between the reactive tank and the rolling-up mechanism and the control unreeling structure and rolling-up mechanism；The guiding mechanism includes the reactive tank pilot unit that the film wire on unreeling structure is introduced to reactive tank, the film wire in reactive tank is introduced to the winding pilot unit for post-processing the post-processing pilot unit of mechanism and post-processing film wire introducing rolling-up mechanism within the organization；The reactive tank pilot unit, post-processing pilot unit and winding pilot unit all have parallel separated type multi-channel structure.Using the guiding mechanism being made of the pilot unit of multi-channel structure, a plurality of film wire of single application is realized, improve production efficiency；Control system centralized control unreels and rolling speed, accurately controls the reaction time, improves the degree of automation.
Description
Technical field
The utility model relates to technical field of separation membrane preparation more particularly to a kind of hollow fiber composite membrane preparation facilities.
Background technique
Nanofiltration membrane is a kind of membrane material for having special centrifugation, and membrane aperture size is between 1-10 nanometers, the hole
Diameter range allows the monovalencies salt ions such as sodium, potassium to penetrate (rejection≤50%), and exists to divalent or multivalent ion and molecular weight
Organic matter between 200-1000 has preferable removal efficiency.Very special in view of the separation scale of nanofiltration membrane, nanofiltration membrane is available
In water body softening (calcium ions and magnesium ions retention) and detoxification (microorganism, heavy metal retain), (such as dyestuff, drug are raw for special industrial chemicals
Substance) purification and the fields such as concentration and water-oil separating.Compared to plate nanofiltration membrane, hollow fiber nanofiltration membrane fiber occupies empty
Between it is smaller, the filling membrane area in element is bigger, produce water efficiency be significantly improved compared with rolled film.In addition, doughnut structure pair
The tolerance of pressure is good, can be subjected to stronger impact cleaning, contamination resistance is more preferably.
However, most of composite nanometer filtering film is still plate film assembly in the market, received this is because doughnut is compound
Filter membrane is generally made using interfacial polymerization, and manufacturing process specifically includes that and first film wire to be processed is placed in aqueous phase monomers
Coating is impregnated, is placed into after taking-up and generates polymerization reaction in oil phase monomer.The existing equipment that can be realized this process is usually tied
Structure is complicated and acquisition cost is higher, this, which allows for hollow fiber compound nanofiltration membrane, can not industrially realize extensive continuous life
It produces.
Therefore, it is necessary to design, a kind of level of informatization is high, structure is simple, lower-cost hollow fiber compound nanofiltration membrane system
Manufacturing apparatus.
Utility model content
The utility model provides a kind of hollow fiber composite membrane preparation facilities, realizes that more hollow-fibre membranes are continuous simultaneously and applies
It covers, high degree of automation, improves production efficiency, and structure is simple, reduce production cost.
To achieve the above object, the technical solution of the utility model is as follows:
A kind of hollow fiber composite membrane preparation facilities, including unreeling structure, guiding mechanism, rolling-up mechanism, setting are described
At least one set of reactive tank between unreeling structure and rolling-up mechanism, after being arranged between the reactive tank and the rolling-up mechanism
Processing mechanism and control system for controlling the unreeling structure and rolling-up mechanism；
The guiding mechanism includes the reactive tank pilot unit that the film wire on unreeling structure is introduced to reactive tank, incites somebody to action
Film wire in reactive tank, which introduces the post-processing pilot unit of post-processing mechanism and will post-process film wire within the organization, introduces winding
The winding pilot unit of mechanism；The reactive tank pilot unit, post-processing pilot unit and winding pilot unit are respectively provided with
The multi-channel structure of parallel separated type.Parallel separated type multi-channel structure refer to allow simultaneously a plurality of film wire parallel through and film
Mutual impregnable a kind of structure between silk.Using the guiding mechanism being made of the pilot unit of multi-channel structure, realize single
The secondary a plurality of film wire of coating, improves production efficiency；Control system centralized control unreels and rolling speed, accurately controls the reaction time,
The degree of automation is higher.
Optionally, between the unreeling structure and rolling-up mechanism be equipped with tension sensing mechanism, the tension sensing mechanism with
Control system electrically connects.Tension sensing mechanism is by the Tensity size Real-time Feedback of film wire to control system, when the tension of film wire is big
When small and setting value is not inconsistent, corresponding adjustment is made to keep constant tension, to prevent film wire because overtension occurs by control system
It is damaged.
Optionally, the unreeling structure includes unreeling wheel and unreels controller for control the unreeling wheel speed of service,
The controller that unreels is electrically connected with the control system.Unreel the control command that controller is sent according to control system open or
Unreeling wheel is closed, and adjust unreeling wheel unreels speed.
Optionally, the reactive tank pilot unit includes that the first guide part that reactive tank entrance top is arranged in and setting exist
Second guide part of the reaction tank bottom.
Optionally, the reactive tank includes aqueous phase reactions slot and oily phase reaction slot, the aqueous phase reactions slot and oily phase reaction
Slot is set gradually along the direction of transfer of film wire, and first guide part includes the first water that aqueous phase reactions slot entrance top is arranged in
Phase guide part and the first oily phase guide part that the oily phase reaction slot entrance top is arranged in, second guide part includes setting
Aqueous phase reactions trench bottom the second water phase guide part and the second oily phase guide part of the oily phase reaction trench bottom is set.The
One water phase guide part and the second water phase guide part, which cooperate to introduce film wire and be immersed in, completes film wire in aqueous phase reactions slot
Film wire is introduced with the second oily phase guide part mutual cooperation and is immersed in oily phase reaction slot bottom by pretreatment, the first oily phase guide part
Portion makes film wire surface generate interface polymerization reaction and forms ultra-thin interfacial polymerization layer.
Optionally, blowing mechanism, the purging machine are equipped between the aqueous phase reactions slot outlet and oily phase reaction slot entrance
Structure purges the film wire moved between the outlet of aqueous phase reactions slot and oily phase reaction slot entrance.Striping is removed using blowing mechanism
The aqueous phase droplets of silk excess surface, so that entering back into oily phase slot after the water phase distribution on film wire surface is more uniform.
Optionally, the liquid held in the aqueous phase reactions slot is polynary amine aqueous solution；It is held in the oil phase reaction slot
Liquid be polynary acyl chlorides organic solution.
Optionally, the shape of the cross section of the reactive tank is right-angled trapezium.
Optionally, dewatering device is equipped between the unreeling structure and reactive tank entrance, film wire is before entering reactive tank
It is dehydrated using dewatering device, to remove the moisture of film wire excess surface.
Optionally, it is equipped with the first drying unit between reactive tank outlet and post-processing mechanism entrance, it on the one hand can be with
Film wire is dried, on the other hand before being post-processed, so that the water phase on film wire surface and oily phase reaction are more abundant.
Optionally, the post-processing mechanism includes rinse bath and the second drying unit, and the second drying unit setting exists
Between rinse bath outlet and rolling-up mechanism.
Optionally, the liquid held in the rinse bath is hydrochloric acid solution.
Optionally, thermostat is equipped in the reactive tank and rinse bath.Thermostat be effectively ensured reactive tank and
Solution in rinse bath keeps constant temperature, it is ensured that the stability of film reaction.
Optionally, the rolling-up mechanism includes winding wheel and the winding control device for controlling the winding wheel speed of service,
The winding control device is electrically connected with control system.Winding control device is opened or closed according to the control command that control system is sent
Winding wheel, and adjust winding wheel unreels speed.
Optionally, the rolling-up mechanism further includes countdown warning component, the receipts silk circle of countdown warning Assembly calculation winding wheel
Number provides warning note when receiving silk the number of turns and reaching setting value.
Optionally, the multi-channel structure of parallel separated type is made of multiple mutually matched guide parts, each guiding
Multiple godet rollers that part includes fixing axle and is equidistantly mounted in fixing axle.
Hollow fiber composite membrane preparation facilities provided by the utility model.Compared with prior art, multi-channel structure is utilized
Pilot unit, realize a plurality of film wire of single application, improve production efficiency；It unreels and winds using control system centralized control,
The reaction time is accurately controlled, the degree of automation is higher；Using tension sensing mechanism, by the Tensity size Real-time Feedback of film wire to control
System processed makes corresponding adjustment to keep constant tension, to prevent film wire because breakage occurs for overtension by control system；Utilize perseverance
The temperature that warm device can effectively control in reactive tank is constant；Drying unit is set, film wire on the one hand can be dried, on the other hand
Water phase and oily phase reaction can be made more abundant, guarantee the performance of hollow fiber composite membrane.
Detailed description of the invention
Fig. 1 is hollow fiber composite membrane preparation facilities structural schematic diagram in the utility model embodiment one；
Fig. 2 is guide part sectional view in the utility model embodiment one.
In Fig. 1-2: it is single that 1- unreeling structure, 11- unreeling wheel, 12- unreel controller, 2- guiding mechanism, 21- reactive tank guiding
The oily phase guide part of member, the first water phase of 211- guide part, the second water phase of 212- guide part, 213- first, the second oil of 214- are mutually oriented to
Part, 22- post-process pilot unit, 221- first cleans guide part, 222- second cleans guide part, 23- winds pilot unit,
231- first winds guide part, 232- second winds guide part, 2-1- fixing axle, 2-2- godet roller, 3- rolling-up mechanism, 31- are received
Rolling wheel, 32- winding control device, 4- reactive tank, 41- aqueous phase reactions slot, 42- oil phase reaction slot, 5- post-processing mechanism, 51- cleaning
Slot, the second drying unit of 52-, 6- tension sensing mechanism, 7- blowing mechanism, 8- dewatering device, the first drying unit of 9-, 10- film
Silk.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.It should be noted that the utility model attached drawing is all made of simplified form
And non-accurate ratio is used, only to convenient, lucidly aid illustration the utility model embodiment purpose.
Embodiment one
As shown in Figure 1, the present embodiment provides a kind of hollow fiber composite membrane preparation facilities, the unreeling machine including sequence setting
1, one group of reactive tank 4 of structure, the first drying unit 9, post-processing mechanism 5 and rolling-up mechanism 3, film wire 10 pass through guiding mechanism 2
Circulation is realized between all parts of device, and control system centralized control unreeling structure 1 and rolling-up mechanism 3 are set.Unreeling machine
Structure 1 and rolling-up mechanism 3 are fixed by rack.
Guiding mechanism 2 includes being oriented to list for the film wire 10 on unreeling structure 1 to be introduced to the reactive tank of reactive tank 4
Film wire 10 in reactive tank is introduced the post-processing pilot unit 22 for post-processing mechanism 5 and will post-process mechanism 5 by member 21
Interior film wire 10 introduces the winding pilot unit 23 of rolling-up mechanism 3.The reactive tank pilot unit 21, post-processing pilot unit 22
And winding pilot unit 23 respectively includes the multi-channel structure that multiple mutually matched guide parts form parallel separated type, such as schemes
Shown in 2, ten godet roller 2-2 that each guide part respectively includes fixing axle 2-1 and is equidistantly mounted on fixing axle 2-1 are single
Task at most can carry out coating operation by ten film wires 10 simultaneously, and the quantity of godet roller 2-2 can also add according to the actual situation
It adds deduct few.For convenience of difference, hereinafter each guide part is named respectively.
Specifically, as shown in Figure 1, reactive tank 4 includes aqueous phase reactions slot 41 and oily phase reaction slot 42, post-processing mechanism 5 is wrapped
Include rinse bath 51 and the second drying unit 52, reactive tank pilot unit 21 includes that 41 entrance top of aqueous phase reactions slot is arranged in
One water phase guide part 211, is arranged in oily phase reaction slot 42 the second water phase guide part 212 that 41 bottom of aqueous phase reactions slot is arranged in
The oily phase guide part 213 of the first of entrance top and the second oily phase guide part 214 that oily 42 bottom of phase reaction slot is set.
It is the moisture that 10 excess surface of film wire is removed before film wire 10 enters reactive tank 4, in unreeling structure 1 and instead in the present embodiment
Answer between 4 entrance of slot setting dewatering device 8, be equipped in dewatering device 8 can independent control temperature and air quantity purge passage；Water phase
Blowing mechanism 7 is equipped between the outlet of reactive tank 41 and the first oily phase guide part 213.At work, film wire 10 is from unreeling structure 1
In release, initially enter and be dehydrated in dewatering device 8, then soaked through the first water phase guide part 211 and the second water phase guide part 212
Not inside aqueous phase reactions slot 41；Film wire 10, which passes through, enters blowing mechanism 7 after aqueous phase reactions slot 41 exports, then mutually leads through the first oil
It is immersed in inside oily phase reaction slot 42 to part 213 and the second oily phase guide part 214 and carries out interface polymerization reaction.
Polynary amine aqueous solution is filled in aqueous phase reactions slot 41, and polynary acyl chlorides organic solution is filled in oily phase reaction slot 42, it is polynary
Amine aqueous solution can be in m-phenylene diamine (MPD), p-phenylenediamine, o-phenylenediamine, piperazine, polyvinylamine, polyethyleneimine and triethylamine
One or more aqueous solutions, polynary acyl chlorides can be in pyromellitic trimethylsilyl chloride, paraphthaloyl chloride and m-phthaloyl chlorides
One or more mixing, the solvent in polynary acyl chlorides organic solution can be selected from hexamethylene, n-hexane and isoparaffin solvent oil
In one or more mixing.With continued reference to Fig. 1, post-processing pilot unit 22 includes being arranged in the first of 51 entrance top of rinse bath
Cleaning guide part 221 and the second cleaning guide part 222 that 51 bottom of rinse bath is set, in oily phase reaction slot 42 outlet and the
First drying unit 9 is set between one cleaning guide part 221.The liquid held in rinse bath 51 is that concentration is 1-10wt%
Hydrochloric acid solution.When work, film wire 10 is passed through after oily phase reaction slot 42 exports and is sequentially led into the cleaning of the first drying unit 9, first
It is immersed in inside rinse bath 51 and is cleaned after to part 221 and the second cleaning guide part 222.
Winding pilot unit 23 includes that the first winding guide part 231 that 3 top of rolling-up mechanism is arranged in and the second winding are led
To part 232.Second drying unit 52 is set between the outlet of rinse bath 51 and the first winding guide part 231.When work, film wire
10 pass through after rinse bath 51 exports into the second drying unit 52, are then passed through the first winding guide part 231 and the second winding guiding
Part 232, which enters, completes winding in rolling-up mechanism 3.
It is right-angled trapezium that aqueous phase reactions slot 41, oily phase reaction slot 42 and rinse bath 51, which select cross section, in the present embodiment
Container, and inside is equipped with thermostat (not shown), guarantees aqueous phase reactions slot 41, oily phase reaction slot 42 and rinse bath
Solution in 51 keeps constant temperature.
Unreeling structure 1 includes unreeling wheel 11 and unreels controller 12 for control 11 speed of service of unreeling wheel, described
Controller 12 is unreeled to electrically connect with the control system.Unreel the control command that controller 12 is sent according to control system open or
Unreeling wheel 11 is closed, and adjust unreeling wheel 11 unreels speed.
Rolling-up mechanism 3 includes winding wheel 31, the winding control device 32 for controlling 31 speed of service of winding wheel and counts
Alarm assemblies (not shown), countdown warning component specifically include counter switch and alarm, open counter switch and start counting receipts
Silk the number of turns, provides warning note when receipts silk the number of turns of winding wheel 31 reaches setting value alarm device.Winding control device 32 and control
System electrically connects, and winding control device 32 is opened according to the control command that control system is sent, closes winding wheel 31 or adjust winding
Wheel 31 unreels speed.
Tension sensing mechanism 6 is arranged between the first oily phase guide part 213 and oily phase reaction slot 42 in the present embodiment, and tension passes
Mechanism 6 is felt by the Tensity size Real-time Feedback of film wire 10 to control system, and the adjustment of controller 12 is unreeled by control system control and is put
Rolling wheel 11 unreels speed, to keep constant tension.
For the multi-channel structure for cooperating pilot unit, the dewatering device 8, the drying of blowing mechanism 7, first in the present embodiment are single
Member 9 and the second drying unit 52 allow while passing through a plurality of film wire.
A kind of hollow fiber composite membrane preparation facilities provided by the utility model, as shown in Figure 1, its workflow is as follows:
Control system control unreels controller 12 and opens unreeling wheel 11, while controlling winding control device 32 and opening winding wheel
31, the film wire 10 on unreeling wheel 11 is constantly released, and film wire 10 initially enters dewatering device 8 and receives dehydration, then via the first water
Phase guide part 211 and the second water phase guide part 212, which enter, realizes pretreatment in aqueous phase reactions slot 41, film wire 10 is from aqueous phase reactions slot
Blowing mechanism 7 is moved in 41, removes the aqueous phase droplets of excess surface；Then film wire 10 is through the first oily phase guide part 213 and the
Two oily phase guide parts 214 enter in oily phase reaction slot 42, and 10 surface of film wire generates interface polymerization reaction and forms ultra-thin interfacial polymerization
Layer, the film wire 10 that surface forms polymer layer enter the first drying unit 9, complete after drying again through the first winding 231 He of guide part
Second winding guide part 232 enters winding wheel 31 and completes winding, when receipts silk the number of turns on winding wheel 31 reaches setting value alarm
Device provides warning note.
In the process, tension sensing mechanism 6 is by the Tensity size Real-time Feedback of film wire 10 to control system, when tension with
When setting value is not inconsistent, speed is unreeled by what control system control unreeled that controller 12 slows down or accelerate unreeling wheel 11.
Obviously, it is practical new without departing from this can to carry out various modification and variations to utility model by those skilled in the art
The spirit and scope of type.If in this way, these modifications and variations of the present invention belong to the utility model claims and its
Within the scope of equivalent technologies, then the utility model is also intended to including these modification and variations.
Claims (16)
1. a kind of hollow fiber composite membrane preparation facilities, which is characterized in that including unreeling structure, guiding mechanism, rolling-up mechanism, set
It sets at least one set of reactive tank between the unreeling structure and rolling-up mechanism, be arranged in the reactive tank and the rolling-up mechanism
Between post-processing mechanism and control system for controlling the unreeling structure and rolling-up mechanism；
The guiding mechanism includes the reactive tank pilot unit that the film wire on unreeling structure is introduced to reactive tank, will react
Film wire in slot, which introduces the post-processing pilot unit of post-processing mechanism and will post-process film wire within the organization, introduces rolling-up mechanism
Winding pilot unit；The reactive tank pilot unit, post-processing pilot unit and winding pilot unit are respectively provided in parallel
The multi-channel structure of separate type.
2. hollow fiber composite membrane preparation facilities as described in claim 1, which is characterized in that the unreeling structure and winder
Tension sensing mechanism is equipped between structure, the tension sensing mechanism is electrically connected with control system.
3. hollow fiber composite membrane preparation facilities as described in claim 1, which is characterized in that the unreeling structure includes unreeling
Wheel and the controller that unreels for controlling the unreeling wheel speed of service, the controller that unreels are electrically connected with the control system.
4. hollow fiber composite membrane preparation facilities as described in claim 1, which is characterized in that the reactive tank pilot unit packet
The second guide part for including the first guide part that reactive tank entrance top is set and the reaction tank bottom being set.
5. hollow fiber composite membrane preparation facilities as claimed in claim 4, which is characterized in that the reactive tank includes that water phase is anti-
Slot and oily phase reaction slot are answered, the aqueous phase reactions slot and oily phase reaction slot are set gradually along the direction of transfer of film wire, and described first
Guide part includes the first water phase guide part that aqueous phase reactions slot entrance top is arranged in and setting in the oily phase reaction slot entrance
The oily phase guide part of the first of top, second guide part include be arranged in aqueous phase reactions trench bottom the second water phase guide part and
Second oily phase guide part of the oily phase reaction trench bottom is set.
6. hollow fiber composite membrane preparation facilities as claimed in claim 5, which is characterized in that aqueous phase reactions slot outlet and
Blowing mechanism is equipped between oily phase reaction slot entrance, the blowing mechanism exports and oily phase reaction slot to aqueous phase reactions slot is moved to
Film wire between entrance is purged.
7. hollow fiber composite membrane preparation facilities as claimed in claim 5, which is characterized in that held in the aqueous phase reactions slot
Liquid be polynary amine aqueous solution；The liquid held in the oil phase reaction slot is polynary acyl chlorides organic solution.
8. hollow fiber composite membrane preparation facilities as described in claim 1, which is characterized in that the cross section shape of the reactive tank
Shape is right-angled trapezium.
9. hollow fiber composite membrane preparation facilities as described in claim 1, which is characterized in that the unreeling structure and reactive tank
Dewatering device is equipped between entrance.
10. hollow fiber composite membrane preparation facilities as described in claim 1, which is characterized in that the reactive tank outlet is with after
The first drying unit is equipped between processing mechanism entrance.
11. the hollow fiber composite membrane preparation facilities as described in claim 1 or 10, which is characterized in that the post-processing mechanism
Including rinse bath and the second drying unit, the second drying unit setting is between rinse bath outlet and rolling-up mechanism.
12. hollow fiber composite membrane preparation facilities as claimed in claim 11, which is characterized in that held in the rinse bath
Liquid is hydrochloric acid solution.
13. hollow fiber composite membrane preparation facilities as claimed in claim 11, which is characterized in that the reactive tank and rinse bath
Inside it is equipped with thermostat.
14. hollow fiber composite membrane preparation facilities as described in claim 1, which is characterized in that the rolling-up mechanism includes receiving
Rolling wheel and winding control device for controlling the winding wheel speed of service, the winding control device are electrically connected with control system.
15. hollow fiber composite membrane preparation facilities as claimed in claim 14, which is characterized in that the rolling-up mechanism further includes
Countdown warning component.
16. hollow fiber composite membrane preparation facilities as described in claim 1, which is characterized in that the parallel separated type it is more
Channel design is made of multiple mutually matched guide parts, and each guide part includes fixing axle and is equidistantly mounted on fixation
Multiple godet rollers on axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821862321.2U CN209378812U (en) | 2018-11-13 | 2018-11-13 | A kind of hollow fiber composite membrane preparation facilities |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821862321.2U CN209378812U (en) | 2018-11-13 | 2018-11-13 | A kind of hollow fiber composite membrane preparation facilities |
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| Publication Number | Publication Date |
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| CN209378812U true CN209378812U (en) | 2019-09-13 |
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ID=67864464
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| CN201821862321.2U Active CN209378812U (en) | 2018-11-13 | 2018-11-13 | A kind of hollow fiber composite membrane preparation facilities |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110935327A (en) * | 2019-12-30 | 2020-03-31 | 碧菲分离膜（大连）有限公司 | Internal pressure formula hollow fiber receives filter membrane production line |
| CN112452158A (en) * | 2020-09-30 | 2021-03-09 | 西安航天华阳机电装备有限公司 | Receive filter membrane, reverse osmosis membrane shaping humiture balancing unit |
-
2018
- 2018-11-13 CN CN201821862321.2U patent/CN209378812U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110935327A (en) * | 2019-12-30 | 2020-03-31 | 碧菲分离膜（大连）有限公司 | Internal pressure formula hollow fiber receives filter membrane production line |
| CN112452158A (en) * | 2020-09-30 | 2021-03-09 | 西安航天华阳机电装备有限公司 | Receive filter membrane, reverse osmosis membrane shaping humiture balancing unit |
| CN112452158B (en) * | 2020-09-30 | 2023-02-03 | 西安航天华阳机电装备有限公司 | Receive filter membrane, reverse osmosis membrane shaping humiture balancing unit |
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Address after: Building 1-3, 619 Caifeng Road, Huzhou City, Zhejiang Province, 313000 Patentee after: Euro American new materials (Zhejiang) Co.,Ltd. Address before: No.688 Xifeng Road, Huzhou Economic and Technological Development Zone, Huzhou City, Zhejiang Province, 313000 Patentee before: OCHEMATE MATERIAL TECHNOLOGIES Co.,Ltd. |
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