CN112691613B - Reation kettle for aqueous dust lacquer - Google Patents
Reation kettle for aqueous dust lacquer Download PDFInfo
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- CN112691613B CN112691613B CN202110173731.6A CN202110173731A CN112691613B CN 112691613 B CN112691613 B CN 112691613B CN 202110173731 A CN202110173731 A CN 202110173731A CN 112691613 B CN112691613 B CN 112691613B
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- reaction kettle
- baffle
- pushing piece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/10—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by stirrers or by rotary drums or rotary receptacles or endless belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
- B01J8/002—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor with a moving instrument
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/008—Details of the reactor or of the particulate material; Processes to increase or to retard the rate of reaction
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a reaction kettle for water-based dust paint. Including the reation kettle main part, the inside locating plate that is provided with of reation kettle main part, the locating plate with be formed with first cavity between the reation kettle main part inner wall, be provided with a plurality of baffle subassemblies of group in the first cavity, every have the second cavity that is used for installing the feeding car in the baffle subassembly, reach on the wall of reation kettle main part the baffle subassembly department that lies in the correspondence on the wall of locating plate all sets up porosely for supplying the activity of feeding car, simultaneously, is provided with a plurality of sealing members that play sealing effect on the feeding car. According to the invention, the feeding vehicle closest to the liquid level of the liquid raw materials is selected to place the powdery raw materials according to the amount of the proportioned liquid raw materials in the reaction kettle, so that the amount of the scattered powdery raw materials is reduced to the maximum extent, the actual proportioning of the liquid raw materials and the powdery raw materials is closer to the required proportioning, and the improvement of the product quality is facilitated.
Description
Technical Field
The invention relates to the technical field of reaction kettles, in particular to a reaction kettle for water-based dust paint.
Background
Dust lacquer need be used to reation kettle in process of production and is used for mixing at least part of raw materials, including liquid raw materials and powdery raw materials in the raw materials, when adding powdery raw materials to liquid raw materials, powdery raw materials wafts easily, and part can waft to the reation kettle inner wall of liquid raw materials liquid level top on, leads to this part powdery raw materials can not mix to liquid raw materials in, finally leads to the proportion of ratio and actual requirement to have the deviation, influences the product quality.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a reaction kettle for water-based dust paint.
In order to solve the technical problems, the invention is solved by the following technical scheme:
reation kettle for aqueous dust lacquer, including the reation kettle main part, the inside locating plate that is provided with of reation kettle main part, the locating plate with be formed with first cavity between the reation kettle main part inner wall, be provided with a plurality of baffle subassemblies of group in the first cavity, every have the second cavity that is used for installing the feeding car in the baffle subassembly, reach on the wall of reation kettle main part and the baffle subassembly department that lies in the correspondence on the wall of locating plate all sets up porosely for supply the activity of feeding car, simultaneously, be provided with a plurality of sealing members that play the sealing effect on the feeding car.
In the above scheme, preferably, the charging car includes a base and a material collecting groove, the inner end of the base is rotatably connected with the bottom of the inner end of the material collecting groove, a first through hole which is through from top to bottom is formed in the outer end of the base, a pull rope is connected to the bottom of the outer end of the material collecting groove, and the pull rope penetrates through the first through hole and extends to the outside of the first through hole.
In the above scheme, preferably, a pull ring is connected to an end portion of the end of the pull rope extending out of the first through hole, and a diameter of the pull ring is larger than a diameter of the first through hole.
In the above solution, preferably, the upper surface of the base is an inclined surface, and the inclined surface gradually inclines downwards from the outer end to the inner end;
the bottom surface of the material collecting groove is matched with the upper surface of the base.
In the above scheme, preferably, the baffle assembly comprises an upper baffle and a lower baffle, and the two ends of the upper baffle and the two ends of the lower baffle are respectively and fixedly connected with the inner wall of the reaction kettle main body and the inner wall of the positioning plate.
In the above scheme, preferably, a limiting rod is rotatably arranged below the baffle assembly, an opening for the limiting rod to move is formed in the bottom of the baffle assembly, and a limiting block matched with the limiting rod is arranged at the bottom of the feeding vehicle;
a first pushing piece is arranged below the baffle plate assembly and positioned on one side of the lower end of the limiting rod in a sliding mode;
the positioning plate comprises a plurality of concave parts, second through holes for the first pushing pieces to move are formed in the concave parts, flexible pieces used for sealing the second through holes are arranged at the second through holes, and second pushing pieces matched with the first pushing pieces are further rotatably arranged at the concave parts.
In the above scheme, preferably, an electromagnet is arranged on the inner wall of the first cavity at the concave portion, and the second pushing member is an iron member or a magnetic member.
In the above scheme, preferably, a torsion spring is disposed at a rotational connection position of the second pushing member and the concave portion, and when no external force is applied, the second pushing member is turned down and at least a part of the second pushing member is located outside the concave portion.
In the above scheme, preferably, a floating ball capable of sliding up and down is arranged on a wall of the positioning plate, and a moving path of the floating ball passes through all the concave parts.
In the above scheme, preferably, a sliding block is slidably arranged on the wall of the positioning plate, a sliding groove of the sliding block is located on the side of the concave portion, and the floating ball is arranged on the side wall of the sliding block.
The invention has the beneficial effects that: according to the invention, the feeding vehicle closest to the liquid level of the liquid raw materials is selected to place the powdery raw materials according to the amount of the proportioned liquid raw materials in the reaction kettle, so that the amount of the scattered powdery raw materials is reduced to the maximum extent, the actual proportioning of the liquid raw materials and the powdery raw materials is closer to the required proportioning, and the improvement of the product quality is facilitated.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is an enlarged view of the invention at D in fig. 1.
Fig. 3 is an enlarged view of the invention at E in fig. 2.
Fig. 4 is a schematic view of a charging car according to the present invention.
Fig. 5 is a schematic diagram of the outward turning state of the collecting trough of the charging car.
FIG. 6 is a schematic view showing a state in which the limiting rod abuts against the limiting block according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
referring to fig. 1-6, the reaction kettle for the water-based dust paint comprises a reaction kettle main body 1, wherein a stirring piece is arranged on the reaction kettle main body 1, the stirring piece is driven by a motor arranged on the reaction kettle main body 1, and the motor can be arranged on the upper part of the reaction kettle main body 1.
The inside locating plate 2 that is provided with of reation kettle main part 1, the 2 shapes of locating plate and its shape phase-matches of the reation kettle wall of setting for the position, it is fixed to be set up on reation kettle main part 1's inner wall, the welding can be chooseed for use to the fixed mode, fixed back, form first cavity 11 between locating plate 2 and the 1 inner walls of reation kettle main part, locating plate 2 separates reation kettle main part 1 inner chamber for two cavitys, first cavity 11 in two cavitys is used for installing relevant part, another cavity is used for the mixture of raw materials, the stirring piece is located this cavity.
Be provided with a plurality of groups of baffle subassembly in the first cavity 11, every have the second cavity 41 that is used for installing with skip 3 in the baffle subassembly, specifically, the baffle subassembly includes overhead gage 42 and lower baffle 43, and the both ends of overhead gage 42 respectively with reation kettle main part 1 inner wall and 2 inner wall fixed connection of locating plate, the same respectively with the both ends of lower baffle 43 with reation kettle main part 1 inner wall and 2 inner wall fixed connection of locating plate, overhead gage 42 and lower baffle 43 can be parallel arrangement each other. The plurality of baffle assemblies in turn divides the first chamber 11 into a plurality of chambers.
The baffle plate assembly is provided with a feeding vehicle 3, correspondingly, holes are formed in the wall of the reaction kettle main body 1 and the wall of the positioning plate 2 at the corresponding baffle plate assembly, and are used for the movement of the feeding vehicle 3, namely, the feeding vehicle 3 can be drawn out from and inserted into the holes in the wall of the reaction kettle main body 1 and can pass through the holes in the positioning plate 2.
Add skip 3 and include base 31 and material collecting tank 32, base 31 the inner with material collecting tank 32 the inner bottom of rotates to be connected, first through-hole 33 that link up about base 31 outer end department sets up, material collecting tank 32 outer end bottom is connected with stay cord 34, stay cord 34 passes first through-hole 33 extends to outside first through-hole 33, for preventing that stay cord 34 from falling into first through-hole 33 department and being difficult to take out, can extend to at stay cord 34 the outer one end tip department of first through-hole 33 is connected with pull ring 35, the diameter of pull ring 35 is greater than the diameter of first through-hole 33. The inner end of the position is the end of the charging car 3 close to the cavity for mixing raw materials, and the outer end is the end of the charging car 3 far away from the cavity for mixing raw materials.
In order to facilitate the dumping of the material collecting groove 32 and the dumping of the powdery raw materials, the upper surface of the base 31 is set to be an inclined surface, and the inclined surface gradually inclines downwards from the outer end to the inner end; the bottom surface of the material collecting groove 32 is also set to be an inclined surface matched with the upper surface of the base 31, and the inclined surface gradually inclines downwards from the outer end to the inner end, it should be noted that the bottom surface of the cavity for placing the powdery raw material in the material collecting groove 32 is also an inclined surface, and the inclined surface gradually inclines downwards from the outer end to the inner end, so that the powdery raw material naturally draws close to the inner end under the influence of gravity after being added into the material collecting groove 32, the weight of the inner end is greater than that of the outer end, when the feeding vehicle 3 leaves the baffle assembly, the feeding vehicle can be limited by the upper baffle 42 in the baffle assembly, so that the material collecting groove 32 cannot be turned outwards, when the feeding vehicle 3 is pushed into the cavity for mixing in the reaction kettle, the material collecting groove 32 loses the limit of the upper baffle 42, and can be naturally turned outwards by matching with the weight of the inner end being greater than that of the outer end, as shown in fig. 5, the powdery raw material is completely poured into the liquid raw material, and the turning speed is higher, the floating of the powdery raw material can be greatly reduced.
In order to prevent that charging car 3 wholly drops to reation kettle inside, can set up relevant locating part respectively on charging car 3 bottoms and baffle 43 top surface down for inject charging car toward the scope of inside removal, also can set up a cable in the charging trolley outside, the cable is fixed in the outer wall of reation kettle main part 1, in order to prevent that charging car from dropping to reation kettle.
In order to ensure the sealing performance of the position, a plurality of sealing elements with sealing function are arranged on the charging car 3, as a preferable scheme, the sealing elements can be arranged at the head position and the tail position of the charging car 3, and the sealing elements at the head position of the charging car 3 can be directly arranged on the wall of the inner end of the material collecting groove 32; the sealing member that is located 3 afterbody positions of skip that add can directly set up on the wall of base 31 outer end, for promoting the stability of this sealing member installation, can set up a connecting plate on the wall of base 31 outer end, and the upper end and the groove upper end that gathers materials of connecting plate flush, and the lower extreme flushes with the base lower extreme, and this department sealing member setting is on this connecting plate.
Liquid raw materials adds back in the reation kettle main part, because of reation kettle is usually non-transparent, consequently, the unable accuracy of liquid level of inside raw materials is mastered, and can be accurate after mastering the liquid level know where the reinforced car of position is the closest to the liquid level, the reinforced dolly that is close the liquid level more can the maximize degree reduce the wafing of dust when empting powdery raw materials, consequently, do as follows further design.
The feeding device is characterized in that a limiting rod 51 is rotatably arranged below the baffle assembly, an opening for the limiting rod 51 to move is formed in the bottom of the baffle assembly, a limiting block 36 matched with the limiting rod 51 is arranged at the bottom of the feeding vehicle 3, a first pushing piece 52 is slidably arranged at one side of the lower end of the limiting rod 51 below the baffle assembly, the first pushing piece 52 transversely moves, after the first pushing piece 51 is pushed to rotate, the upper end of the limiting rod 51 rotates towards the inner direction of the reaction kettle and abuts against the limiting block 36, the feeding vehicle 3 cannot move, and an operator can judge the liquid level inside the reaction kettle according to whether the feeding vehicle 3 can be taken out or not.
How to push the first pushing member 52 and how to ensure that the first pushing member 52 is positioned after being pushed is designed as follows:
the positioning plate 2 comprises a plurality of concave parts 21, the concave parts 21 are located below corresponding baffle assemblies, second through holes for the first pushing pieces 52 to move are formed in the concave parts 21, flexible pieces 53 for sealing the second through holes are arranged at the positions of the second through holes, the inner ends of the first pushing pieces 52 can move at the positions of the flexible pieces 53, the flexible pieces have corrosion resistance and can be achieved through coatings and the like, redundant description is omitted, second pushing pieces 54 matched with the first pushing pieces 52 are further rotatably arranged at the positions of the concave parts 21, electromagnets 55 are arranged on the inner walls of the first cavities 11 and located at the positions of the concave parts 21, and the second pushing pieces 54 are iron pieces or magnetic pieces.
A torsion spring is arranged at the rotary connection part of the second pushing piece 54 and the inner concave part 21, and when no external force acts, the second pushing piece 54 turns downwards and at least part of the second pushing piece is positioned outside the inner concave part 21.
A floating ball 6 capable of sliding up and down is arranged on the wall of the positioning plate 2, the moving path of the floating ball 6 passes through all the concave parts 21, in order to further optimize the related structure of the floating ball, a sliding block 7 can be arranged on the wall of the positioning plate 2 in a sliding mode, a sliding groove of the sliding block 7 is located on the side edge of the concave part 21, and the floating ball 6 is arranged on the side wall of the sliding block 7.
After the liquid level rises, the floating ball 6 is driven to move upwards, after the floating ball 6 moves to the corresponding second pushing piece 54, the second pushing piece 54 is driven to rotate towards the inner concave part 21, when the floating ball 6 moves to the upper end position of the inner concave part 21, the second pushing piece 54 is integrally positioned in the inner concave part 21, the electromagnet 55 is used for absorbing the inner wall of the inner concave part 21 to be attached or tend to be attached through the magnetic adsorption force of the electromagnet 55, so that the first pushing piece 52 is pushed to move transversely, the limiting rod 51 is finally abutted to the limiting block 36 at the upper end, the feeding cart 3 cannot be pulled out for feeding, it needs to be described that the inner wall of the inner concave part 21 can be selected from materials which can enable the electromagnetic ferromagnetism to penetrate and can attract the second pushing piece, and for the prior art, and redundant description.
The electromagnet 55 can also be arranged in the inner concave part 21, the electromagnet is sleeved with a pseudo-cover, and the specific arrangement position of the electromagnet only needs to ensure that the limiting rod can abut against the limiting block.
Operating personnel only need learn the approximate position of liquid in the reation kettle can be known to the reinforced car that can be taken out of the below through the mode of pull, add the powder raw materials of reduction that can maximize in the reinforced car of this department and drift.
The electromagnet 55 can be powered on or powered off through a switch arranged on the outer wall of the reaction kettle main body 1, and the switch is electrically connected with the electromagnet.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. Reation kettle for water-based dust lacquer, including the reation kettle main part, its characterized in that: a positioning plate is arranged in the reaction kettle main body, a first cavity is formed between the positioning plate and the inner wall of the reaction kettle main body, a plurality of groups of baffle plate assemblies are arranged in the first cavity, a second cavity for mounting a charging car is arranged in each baffle plate assembly, holes are formed in the wall of the reaction kettle main body and the corresponding baffle plate assemblies on the wall of the positioning plate for the movement of the charging car, and meanwhile, a plurality of sealing pieces with sealing functions are arranged on the charging car;
a limiting rod is rotatably arranged below the baffle plate assembly, an opening for the limiting rod to move is formed in the bottom of the baffle plate assembly, and a limiting block matched with the limiting rod is arranged at the bottom of the feeding vehicle;
a first pushing piece is arranged below the baffle plate assembly and positioned on one side of the lower end of the limiting rod in a sliding mode;
the positioning plate comprises a plurality of concave parts, the concave parts are provided with second through holes for the first pushing pieces to move, the second through holes are provided with flexible pieces for sealing the second through holes, and the concave parts are also rotatably provided with second pushing pieces matched with the first pushing pieces;
an electromagnet is arranged on the inner wall of the first cavity at the concave part, and the second pushing piece is an iron piece or a magnetic piece;
a torsional spring is arranged at the rotary connection part of the second pushing piece and the concave part, and when no external force acts, the second pushing piece turns downwards and at least part of the second pushing piece is positioned outside the concave part;
a floating ball capable of sliding up and down is arranged on the wall of the positioning plate, and the moving path of the floating ball passes through all the concave parts;
after the liquid level rises, the floating ball is driven to move upwards, the floating ball moves to a corresponding second pushing piece and then drives the second pushing piece to rotate towards the inner concave part, when the floating ball moves to the upper end position of the inner concave part, the second pushing piece is integrally positioned in the inner concave part, at the moment, the second pushing piece is adsorbed to the inner wall of the inner concave part by the electromagnet through the magnetic adsorption force of the electromagnet on the second pushing piece, so that the first pushing piece is pushed to move transversely, finally, the upper end of the limiting rod abuts against the limiting block, and the feeding vehicle cannot be pulled out for feeding;
operating personnel only need learn the approximate position of liquid in the reation kettle can be known to the reinforced car that can be taken out of the below through the mode of pull, add the powder raw materials of reduction that can maximize in the reinforced car of this department and drift.
2. The reaction kettle for the water-based dust paint as claimed in claim 1, wherein: the feeding vehicle comprises a base and a material collecting groove, the inner end of the base is rotatably connected with the bottom of the inner end of the material collecting groove, a first through hole which is communicated up and down is formed in the outer end of the base, a pull rope is connected to the bottom of the outer end of the material collecting groove, and the pull rope penetrates through the first through hole and extends to the outside of the first through hole.
3. The reaction kettle for the water-based dust paint as claimed in claim 2, wherein: the end part of one end of the pull rope extending out of the first through hole is connected with a pull ring, and the diameter of the pull ring is larger than that of the first through hole.
4. The reaction kettle for aqueous dust paint according to claim 2 or 3, characterized in that: the upper surface of the base is an inclined plane and gradually inclines downwards from the outer end to the inner end;
the bottom surface of the material collecting groove is matched with the upper surface of the base.
5. The reaction kettle for the water-based dust paint as claimed in claim 1, wherein: the baffle assembly comprises an upper baffle and a lower baffle, wherein the two ends of the upper baffle and the two ends of the lower baffle are respectively fixedly connected with the inner wall of the reaction kettle main body and the inner wall of the positioning plate.
6. The reaction kettle for the water-based dust paint as claimed in claim 1, wherein: the wall of the positioning plate is provided with a sliding block in a sliding mode, a sliding groove of the sliding block is located on the side edge of the concave portion, and the floating ball is arranged on the side wall of the sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173731.6A CN112691613B (en) | 2021-02-06 | 2021-02-06 | Reation kettle for aqueous dust lacquer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173731.6A CN112691613B (en) | 2021-02-06 | 2021-02-06 | Reation kettle for aqueous dust lacquer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112691613A CN112691613A (en) | 2021-04-23 |
| CN112691613B true CN112691613B (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110173731.6A Active CN112691613B (en) | 2021-02-06 | 2021-02-06 | Reation kettle for aqueous dust lacquer |
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| CN (1) | CN112691613B (en) |
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| CN108786692A (en) * | 2018-04-08 | 2018-11-13 | 张新雨 | A kind of hydrogen production reaction kettle of improvement |
| CN208194355U (en) * | 2018-04-17 | 2018-12-07 | 衢州市东凯胶业有限公司 | It is a kind of for producing the reaction kettle feeding device of glue |
| CN109317076A (en) * | 2018-11-06 | 2019-02-12 | 李斌宇 | Biological medicine process equipment |
| CN208599576U (en) * | 2018-06-11 | 2019-03-15 | 苏州汉圭化工科技有限公司 | A kind of chemical industry solid-liquid mixer |
| CN209752853U (en) * | 2019-03-25 | 2019-12-10 | 山东海利尔化工有限公司 | Can reduce reation kettle for chemical production of import dust |
| CN210934886U (en) * | 2019-09-19 | 2020-07-07 | 大连天源基化学有限公司 | Liquid height display device in reaction kettle |
| CN111589397A (en) * | 2020-05-26 | 2020-08-28 | 冯丹丹 | Reactor with liquid level detection function in reactor |
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2021
- 2021-02-06 CN CN202110173731.6A patent/CN112691613B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6447733B1 (en) * | 1994-11-04 | 2002-09-10 | T I Properties, Inc. | Fluid contact chamber |
| CA2661077A1 (en) * | 2006-08-18 | 2008-02-21 | Shell Internationale Research Maatschappij B.V. | Process for fractionating a hydrocarbonaceous catalytically cracked product stream and a fractionation column therefore |
| CN106669582A (en) * | 2017-01-18 | 2017-05-17 | 沈阳化工大学 | Impinging stream mixing reactor with multiple groups of layered symmetric baffles |
| CN107261910A (en) * | 2017-06-08 | 2017-10-20 | 惠安县长信机电科技有限公司 | A kind of sour milk beverage homogenizer of convenient charging |
| CN108786692A (en) * | 2018-04-08 | 2018-11-13 | 张新雨 | A kind of hydrogen production reaction kettle of improvement |
| CN208194355U (en) * | 2018-04-17 | 2018-12-07 | 衢州市东凯胶业有限公司 | It is a kind of for producing the reaction kettle feeding device of glue |
| CN208599576U (en) * | 2018-06-11 | 2019-03-15 | 苏州汉圭化工科技有限公司 | A kind of chemical industry solid-liquid mixer |
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| CN111589397A (en) * | 2020-05-26 | 2020-08-28 | 冯丹丹 | Reactor with liquid level detection function in reactor |
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| Publication number | Publication date |
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| CN112691613A (en) | 2021-04-23 |
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Denomination of invention: Reaction kettle for waterborne dust paint Effective date of registration: 20220408 Granted publication date: 20210921 Pledgee: Shaoxing Bank Co.,Ltd. Zhuji sub branch Pledgor: ZHEJIANG FEIDA NEW MATERIAL Co.,Ltd. Registration number: Y2022980004033 |
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