CN114620427B - Raw material conveying device for powder coating processing production - Google Patents
Raw material conveying device for powder coating processing production Download PDFInfo
- Publication number
- CN114620427B CN114620427B CN202210531437.2A CN202210531437A CN114620427B CN 114620427 B CN114620427 B CN 114620427B CN 202210531437 A CN202210531437 A CN 202210531437A CN 114620427 B CN114620427 B CN 114620427B
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- feeding hopper
- blanking barrel
- screw feeder
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 17
- 239000000843 powder Substances 0.000 title claims abstract description 15
- 239000011248 coating agent Substances 0.000 title claims abstract description 14
- 239000002994 raw material Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000004744 fabric Substances 0.000 claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G41/00—Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames
- B65G41/001—Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames with the conveyor adjustably mounted on the supporting frame or base
- B65G41/002—Pivotably mounted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/18—Preventing escape of dust
- B65G69/181—Preventing escape of dust by means of sealed systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention belongs to the field of conveyor equipment, and particularly relates to a raw material conveying device for powder coating processing production, which comprises a screw feeder, wherein the upper end and the lower end of the screw feeder are respectively provided with a discharge pipe and a feeding hopper, the feeding hopper comprises a blanking barrel, the lower part of the blanking barrel is fixedly connected with the screw feeder, the left side and the right side of the blanking barrel are rotatably connected with rotating rods, one end of each rotating rod, which is far away from the blanking barrel, is fixedly connected with a feeding hopper body, the front side and the rear side of the blanking barrel are fixedly connected with rolling devices, each rolling device comprises a scroll, dustproof cloth is wound on the scroll, and one end of the dustproof cloth is fixedly connected with the feeding hopper body.
Description
Technical Field
The invention belongs to the field of conveyor equipment, and particularly relates to a raw material conveying device for powder coating processing production.
Background
The powder coating is a solid powder synthetic resin coating composed of solid resin, pigment, filler, auxiliary agent and the like. Unlike conventional solvent-based coatings and water-based coatings, the dispersion medium is not a solvent and water, but air. It has the characteristics of no solvent pollution, 100 percent film forming and low energy consumption. As powder coating's main raw materials for production, the solid resin of purchase on the market is generally the graininess, need carry it in the mixing apparatus through screw feeder, but because different production line productivity are different, the mixing apparatus size of being equipped with is just also different, the feed inlet height difference of the mixing apparatus of equidimension not, then need incline different angles with screw feeder when being equipped with screw feeder for different mixing apparatus, make it unload to the feed inlet of mixing apparatus, but screw feeder's inclination adjustment can drive its self last hopper slope thereupon, if it is too big can lead to the workman to be difficult to the material addition of screw feeder's charge door to go up the hopper inclination scope.
Disclosure of Invention
The invention provides the raw material conveying device for processing and producing the powder coating, which is easy to use and aims at solving the problem that the inclination angle range of the feeding hopper is too large, so that a worker is difficult to add materials to the feeding port of the screw feeder.
In order to achieve the purpose, the invention adopts the technical scheme that the raw material conveying device for processing and producing the powder coating comprises a screw feeder, wherein the upper end and the lower end of the screw feeder are respectively provided with a discharge pipe and an upper hopper, the upper hopper comprises a blanking barrel, the lower part of the blanking barrel is fixedly connected with the screw feeder, the left side and the right side of the blanking barrel are rotatably connected with a rotating rod, one end of the rotating rod, which is far away from the blanking barrel, is fixedly connected with an upper hopper body, the front side and the rear side of the blanking barrel are fixedly connected with rolling devices, each rolling device comprises a scroll, dustproof cloth is wound on the scroll, one end of the dustproof cloth is fixedly connected with the upper hopper body, the upper part of the blanking barrel comprises a connecting end with a semicircular section, the connecting end is embedded with the upper hopper body and is also communicated with the upper hopper body, and the left side and the right side of the connecting end are fixedly connected with semicircular tracks, when the feeding hopper body rotates, the dustproof cloth is pulled to move along the track.
Preferably, the winding device further comprises a housing and a rotating shaft arranged in the housing, the reel is sleeved on the rotating shaft, springs used for driving the reel to rotate are further sleeved at two ends of the rotating shaft, and two ends of each spring are respectively fixedly connected with the rotating shaft and the housing.
Preferably, the lower end of the screw feeder is also fixedly connected with a bracket for supporting the screw feeder, and the bracket is rotatably connected with a bottom plate.
Preferably, the discharge pipe comprises a plurality of iron wires which are arranged in an annular shape, and the iron wires are connected with a cloth bag opening in a string connection mode.
Compared with the prior art, the invention has the advantages and positive effects that,
according to the invention, the feeding hopper body is arranged and can rotate, so that a worker can conveniently add materials into the feeding hopper body, the blanking barrel comprises the connecting end with the semicircular upper end section, and the connecting end is embedded with the feeding hopper body, so that the connecting end does not hinder the feeding hopper body from rotating. The application method is simple and convenient, and is easy to popularize and use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a raw material conveying device for powder coating processing production;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure B in FIG. 1;
fig. 4 is a schematic view of the internal structure of the winding device.
In the above figures, 1, a screw feeder; 2. a discharge pipe; 21. iron wires; 22. a cloth bag opening; 3. feeding a hopper; 31. a feeding hopper body; 4. blanking the barrel; 41. a linking end; 42. a rotating rod; 43. a track; 5. a winding device; 51. a reel; 52. a rotating shaft; 53. a spring; 6. a bracket; 7. a base plate.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
As shown in figures 1, 2, 3 and 4, a raw material conveying device for powder coating processing production comprises a screw feeder 1 for conveying materials, wherein the upper end and the lower end of the screw feeder 1 are respectively provided with a discharge pipe 2 and an upper hopper 3, in order to facilitate workers to add materials to a charging opening, namely to add materials into the upper hopper 3, the upper hopper 3 comprises a blanking barrel 4 with the lower part fixedly connected with the screw feeder 1, the blanking barrel 4 is hollow, the left side and the right side of the blanking barrel 4 are rotatably connected with rotating rods 42, one end of each rotating rod 42 far away from the blanking barrel 4 is fixedly connected with an upper hopper body 31, namely the rotating rod 42 can drive the upper hopper body 31 to rotate, the upper hopper body 31 can not rotate in a bolt fixing mode after the rotation is finished, and the upper hopper body 31 can be rotated to facilitate the material receiving when the inclination of the screw feeder 1 is different, namely, workers can easily add materials to the feed inlet.
In order to prevent dust from entering the blanking barrel 4 or the materials from leaking from the connection part of the blanking barrel 4 and the feeding hopper body 31, the winding devices 5 are fixedly connected to the front side and the rear side of the blanking barrel 4, each winding device 5 comprises a winding shaft 51, dustproof cloth (not shown in the figure) is wound on each winding shaft 51, the winding shafts 51 can rotate to discharge the dustproof cloth, and one end of the dustproof cloth is fixedly connected with the feeding hopper body 31. Specifically speaking, can drag the dustproof cloth when the feeding funnel body 31 is rotatory and remove, make dustproof cloth cover blanking barrel 4 upper end opening, can avoid the dust to get into blanking barrel 4 or the material spills from blanking barrel 4, feeding funnel body 31 junction, still can pack up unnecessary dustproof cloth through rotatory spool 51 simultaneously, avoids dustproof cloth redundancy.
In order to enable the reel 51 to automatically wind the dustproof cloth, the winding device 5 further comprises a shell and a rotating shaft 52 arranged in the shell, the reel 51 is sleeved on the rotating shaft 52, the reel 51 is located in the middle of the rotating shaft 52, two ends of the rotating shaft 52 are further sleeved with springs 53 used for driving the reel 51 to rotate, two ends of each spring 53 are fixedly connected with the rotating shaft 52 and the shell respectively, when the reel 51 rotates to release the dustproof cloth, the springs 53 deform, and the springs 53 have a tendency of pulling the reel 51 to restore to the original position, so that the dustproof cloth can be automatically wound.
In order to prevent the feeding hopper body 31 from being blocked by the blanking barrel 4 when rotating, the upper part of the blanking barrel 4 comprises a connection end 41 with a semicircular section, the connection end 41 is embedded with the feeding hopper body 31, so that the feeding hopper body 31 can move along the connection end 41 in an arc-shaped track, and meanwhile, the connection end 41 is communicated with the feeding hopper body 31, so that materials can enter the blanking barrel 4 from the feeding hopper body 31.
In order to make the dustproof cloth move along the connection end 41 to achieve better effect of preventing material leakage, the left side and the right side of the connection end 41 are fixedly connected with semicircular tracks 43, the cross section of each track 43 is L-shaped, the dustproof cloth is pulled to move along the tracks 43 when the feeding hopper body 31 rotates, namely, the two sides of the dustproof cloth are pressed by the tracks 43 when the dustproof cloth moves, so that the dustproof cloth moves along the connection end 41.
In order to enable the screw feeder 1 to conveniently adjust the inclination angle, the lower end of the screw feeder 1 is also fixedly connected with a bracket 6 used for supporting the screw feeder 1, the bracket 6 is rotatably connected with a bottom plate 7, and after the inclination angle of the screw feeder 1 is adjusted, the bottom plate 7 can be fixed on the ground through bolts.
In order to make discharge tube 2 adjustable, discharge tube 2 includes a plurality of iron wires 21, and a plurality of iron wires 21 are the annular and arrange, and a plurality of iron wires 21 are connected with cloth sack 22 through the mode that string (not shown in the figure) is connected, and the material falls into the mixing apparatus from cloth sack 22, can make cloth sack 22 direction change through adjusting a plurality of iron wires 21 for the material conveniently falls into the mixing apparatus.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (4)
1. A raw material conveying device for powder coating processing production comprises a screw feeder, wherein a discharge pipe and a feeding hopper are respectively arranged at the upper end and the lower end of the screw feeder, and the raw material conveying device is characterized in that the feeding hopper comprises a blanking barrel, the lower part of the blanking barrel is fixedly connected with the screw feeder, rotating rods are rotatably connected to the left side and the right side of the blanking barrel, one end of each rotating rod, which is far away from the blanking barrel, is fixedly connected with a feeding hopper body, the front side and the rear side of the blanking barrel are fixedly connected with winding devices, each winding device comprises a scroll, dustproof cloth is wound on the scroll, one end of the dustproof cloth is fixedly connected with the feeding hopper body, the upper part of the blanking barrel comprises a connecting end with a semicircular section, the connecting end is embedded with the feeding hopper body and is also communicated with the feeding hopper body, and the left side and the right side of the connecting end are fixedly connected with semicircular tracks, when the feeding hopper body rotates, the dustproof cloth is pulled to move along the track.
2. The raw material conveying device for powder coating processing and production according to claim 1, wherein the winding device further comprises a housing and a rotating shaft arranged in the housing, the reel is sleeved on the rotating shaft, springs for driving the reel to rotate are further sleeved at two ends of the rotating shaft, and two ends of each spring are respectively fixedly connected with the rotating shaft and the housing.
3. The raw material conveying device for powder coating processing and production according to claim 1, wherein a bracket for supporting the screw feeder is fixedly connected to the lower end of the screw feeder, and a bottom plate is rotatably connected to the bracket.
4. The raw material conveying device for processing and producing powder coatings as claimed in claim 1, wherein the discharge pipe comprises a plurality of iron wires which are annularly arranged, and a cloth bag opening is connected with the iron wires in a string connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210531437.2A CN114620427B (en) | 2022-05-17 | 2022-05-17 | Raw material conveying device for powder coating processing production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210531437.2A CN114620427B (en) | 2022-05-17 | 2022-05-17 | Raw material conveying device for powder coating processing production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114620427A CN114620427A (en) | 2022-06-14 |
| CN114620427B true CN114620427B (en) | 2022-07-29 |
Family
ID=81906992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210531437.2A Active CN114620427B (en) | 2022-05-17 | 2022-05-17 | Raw material conveying device for powder coating processing production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114620427B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0171115A1 (en) * | 1984-08-01 | 1986-02-12 | Norddeutsche Affinerie Ag | Device for loading containers with dust-laden bulk materials without or hardly dispersing the dust |
| CN109552198A (en) * | 2017-09-26 | 2019-04-02 | 恩坦华产品有限责任公司 | Multi-position electronic intelligent sun shade |
| CN110538853A (en) * | 2018-05-29 | 2019-12-06 | 湖北卡斯工业科技有限公司 | Use method of movable totally-enclosed casting dust removal facility |
| CN211544925U (en) * | 2020-01-13 | 2020-09-22 | 杭州法牧智能科技有限公司 | Discharge gate gesture adjustable screw conveyer |
| CN212768187U (en) * | 2020-05-15 | 2021-03-23 | 河南万华畜牧设备有限公司 | Flexible central stockline free combination conveying equipment |
| CN112886436A (en) * | 2021-01-18 | 2021-06-01 | 史鸿枭 | Electrical cabinet with overheat protection |
| CN113003257A (en) * | 2021-03-30 | 2021-06-22 | 浙江物产环能浦江热电有限公司 | Dust fall ash soil sediment storehouse system of unloading |
| CN213678955U (en) * | 2020-11-02 | 2021-07-13 | 夏盛 | Swing feeder |
| CN215158403U (en) * | 2021-07-02 | 2021-12-14 | 无锡市欧力亚科技有限公司 | Special promotion formula material feeding unit of abandonment tectorial membrane sand |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208552328U (en) * | 2017-12-29 | 2019-03-01 | 合肥市第二人民医院 | A kind of medical hospital bed shaded frame |
| CN114342714A (en) * | 2022-01-19 | 2022-04-15 | 扬州市职业大学(扬州开放大学) | Automatic curtain warmhouse booth that rolls up of artifical illumination regulation and control is planted to maize |
-
2022
- 2022-05-17 CN CN202210531437.2A patent/CN114620427B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0171115A1 (en) * | 1984-08-01 | 1986-02-12 | Norddeutsche Affinerie Ag | Device for loading containers with dust-laden bulk materials without or hardly dispersing the dust |
| CN109552198A (en) * | 2017-09-26 | 2019-04-02 | 恩坦华产品有限责任公司 | Multi-position electronic intelligent sun shade |
| CN110538853A (en) * | 2018-05-29 | 2019-12-06 | 湖北卡斯工业科技有限公司 | Use method of movable totally-enclosed casting dust removal facility |
| CN211544925U (en) * | 2020-01-13 | 2020-09-22 | 杭州法牧智能科技有限公司 | Discharge gate gesture adjustable screw conveyer |
| CN212768187U (en) * | 2020-05-15 | 2021-03-23 | 河南万华畜牧设备有限公司 | Flexible central stockline free combination conveying equipment |
| CN213678955U (en) * | 2020-11-02 | 2021-07-13 | 夏盛 | Swing feeder |
| CN112886436A (en) * | 2021-01-18 | 2021-06-01 | 史鸿枭 | Electrical cabinet with overheat protection |
| CN113003257A (en) * | 2021-03-30 | 2021-06-22 | 浙江物产环能浦江热电有限公司 | Dust fall ash soil sediment storehouse system of unloading |
| CN215158403U (en) * | 2021-07-02 | 2021-12-14 | 无锡市欧力亚科技有限公司 | Special promotion formula material feeding unit of abandonment tectorial membrane sand |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114620427A (en) | 2022-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204294301U (en) | A kind of three storehouse refined cement ball mills | |
| CN208526817U (en) | A kind of twin-stage ball mill | |
| CN114620427B (en) | Raw material conveying device for powder coating processing production | |
| CN206229428U (en) | A kind of flour mill milling device | |
| CN112517117A (en) | Grinding mechanism suitable for water-based paint sand mill | |
| CN109092418A (en) | A kind of powdery paints production technology | |
| CN204727240U (en) | The efficient dustproof bulk machine of applicable various | |
| CN116809182B (en) | Raw material grinding and mixing device for preparing lithium iron phosphate | |
| CN104997204B (en) | A kind of double-width lining cloth powder point machine | |
| CN206782928U (en) | A kind of automatic paper winding device for being used to produce toilet paper | |
| CN209038534U (en) | Blanking homogenizer in a kind of silos library | |
| CN207194915U (en) | Concrete sprayer feed arrangement | |
| CN205734374U (en) | A kind of capsule polisher sorting capsule | |
| CN212524493U (en) | Slag pulverizer feeding system | |
| CN210815601U (en) | Continuous ball mill for tungsten powder dispersion | |
| CN219750668U (en) | Sinking type material transfer bin | |
| CN213801677U (en) | Epoxy production automatic feeding mechanism | |
| CN106894461A (en) | A kind of construction filling device | |
| CN217970883U (en) | Hopper for lime bin | |
| CN223505665U (en) | Adjustable V-shaped powder concentrator | |
| CN206997032U (en) | A kind of sweetened bean paste-making machine tool equipment | |
| CN219238492U (en) | Conveying equipment for ferrosilicon chromium wave-absorbing powder | |
| CN216396520U (en) | Grind even powder coating grinder | |
| CN206502321U (en) | The conveying worm transmitted for stalk powder | |
| CN218950224U (en) | Plastic particle feeding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A raw material conveying device for powder coating processing and production Effective date of registration: 20230224 Granted publication date: 20220729 Pledgee: China Postal Savings Bank Corporation Longkou sub branch Pledgor: Shandong Bojia Huacai polymer material Co.,Ltd. Registration number: Y2023980033312 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220729 Pledgee: China Postal Savings Bank Corporation Longkou sub branch Pledgor: Shandong Bojia Huacai polymer material Co.,Ltd. Registration number: Y2023980033312 |