CN104441314B - One moulds wood granulating system - Google Patents
One moulds wood granulating system Download PDFInfo
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- CN104441314B CN104441314B CN201410786305.XA CN201410786305A CN104441314B CN 104441314 B CN104441314 B CN 104441314B CN 201410786305 A CN201410786305 A CN 201410786305A CN 104441314 B CN104441314 B CN 104441314B
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- Prior art keywords
- rotary flange
- granulating system
- cover
- flow region
- wood
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/002—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using a central suction system, e.g. for collecting exhaust gases in workshops
- B08B15/005—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using a central suction system, e.g. for collecting exhaust gases in workshops comprising a stationary main duct with one or more branch units, the branch units being freely movable along a sealed longitudinal slit in the main duct
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
- B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The present invention relates to one and mould wood granulating system, belong to and mould wood Granulation Equipments technical field.It includes the first screw rod conveyor, high-speed mixer, the second screw rod conveyor, double screw extruder and the granule materials collecting device being sequentially connected with.The present invention is capable of operating from mixed powder to the continuous prodution moulding wood granule, and in production process, it is not necessary to workman pays labour, it is only necessary to monitoring industrial processes, not only production efficiency is high, the most not pollutes production environment, meets the theory of green production.
Description
Technical field
The present invention relates to one and mould wood granulating system, belong to and mould wood Granulation Equipments technical field.
Background technology
Mould plank be mixed by wood flour and plastic warp, melt, plastify, sheet material that the series of processes such as extrusion is processed into, the performances such as it is water-fast that it has good protection against the tide, acid and alkali-resistance, antifungal, antistatic, Anti-moth-eating.The series wood-plastic composite utilizing wood flour, Caulis et Folium Oryzae, waste plastics the like waste to produce just is stepping into the fields such as finishing, building.
Existing Granulation Equipments is all that needs are manually-operated, and not only production efficiency is low, also easily pollutes production environment.
Summary of the invention
The invention solves the problems that above-mentioned technical problem, thus provide one to mould wood granulating system.
The technical scheme that the present invention solves the problems referred to above is as follows:
One moulds wood granulating system, including the first screw rod conveyor being sequentially connected with, high-speed mixer, the second screw rod conveyor, double screw extruder and granule materials collecting device；
Described high-speed mixer includes that control chamber, the motor being controlled by described control chamber and inside are provided with the cylinder that rotation status is controlled by the stirring paddle of described motor, described cylinder is provided with discharging opening, has the cover of charging aperture, the first suction port and the second suction port；Described cover is articulated with cylinder so that described cover forms hinge and opening and closing part, and the keying of described opening and closing part is controlled by the first Hydraulic Conirol Unit；Described discharging opening includes that moisture exhausting port, the keying of described moisture exhausting port are controlled by the second Hydraulic Conirol Unit；Described first suction port is arranged at the top of described cover, and described second suction port is arranged at the top of described discharging opening, and described first, second suction port is connected with dust arrester by pipeline；
Described double screw extruder includes feed hopper, mair motor, machine barrel and two screw rods being located in described machine barrel, described feed hopper and mair motor are positioned at described machine barrel feed end, described feed hopper is positioned at above mair motor, described screw rod is driven by described mair motor, described machine barrel starts to be sequentially provided with preheating zone, gradient-heated district and discharger from feed end, and described gradient-heated divides into intensification section, soaking zone and fluxing zone；
Described granule materials collecting device includes that material provisioning component and splice jug, described material provisioning component include storage material bucket, feeding fan, feeder sleeve, temporary storage tank and shedding mechanism；Described temporary storage tank is connected with described feeding fan by described feeder sleeve, and contraction flow region is formed at described temporary storage tank bottom, and described contraction flow region lower end is provided with described shedding mechanism；Described splice jug is positioned at below described temporary storage tank, so that material drops down onto described splice jug after described shedding mechanism is discharged.
In technique scheme of the present invention, described dust arrester can be the one in cyclone dust extractor, sack cleaner, water dust scrubber, and electrostatic precipitator cost is the highest, it is adaptable to the application of extensive dedusting.The porch of dust arrester is provided with blower fan, is used for providing air-breathing power.When cover and moisture exhausting port are opened/closed to needs, manipulate also by the button on switch board.
In technique scheme of the present invention, being controlled the keying of cover and discharging opening by Hydraulic Conirol Unit, easy and simple to handle and efficient solution is except potential safety hazard.
In technique scheme of the present invention, charge door and discharge outlet are provided with suction port, have ensured that operating environment is good, environmental protection.
In technique scheme of the present invention, double screw extruder has the advantage that extrusion is effective, production efficiency is high.
In technique scheme of the present invention, the air-flow containing material particles carried through feeding fan tangentially enters in temporary storage tank, now temporary storage tank plays the effect of cyclone separator, the material of larger particles clings to the inwall of described temporary storage tank and moves downward and be collected in splice jug along with centrifugal force, and micronic dust is then siphoned away by dust excluding hood.
Preferred as technique scheme, being provided with latch components between described cover and described cylinder, described latch components includes that the projection being positioned at the opening and closing part of cover realizes the metal buckle sealed to described cover with being hinged on described top, cylinder lateral wall and matching with described projection.
Preferred as technique scheme, described cylinder is made up of inner bag and chuck, is provided with liquid heat-conducting medium between inner bag and chuck；Described chuck includes heating layer, heat-insulation layer and outer shell.
Preferred as technique scheme, described inner container side surface is waveform concave-convex curved surface.
Inner-tube structure is improved by the present invention, is heated evenly, and material mixing is more abundant.
Preferred as technique scheme, is provided with blade in described splice jug, lower section is provided with motor, and described blade is connected by rotating shaft with described motor；Described rotating shaft is positioned at the center of described splice jug.
Preferred as technique scheme, described shedding mechanism includes that curved mouth and rotary flange, described curved mouth are rotationally connected with described contraction flow region lower end by described rotary flange；Described splice jug has two；When rotating described rotary flange, toggling towards between said two splice jug of described curved mouth.
In technique scheme of the present invention, the setting of rotary flange makes curved mouth can toggle between two splice jugs.Those skilled in the art can drive structure control the rotation of described rotary flange by arranging one completely, thus control described curved mouth towards.Consequently, it is possible to when one of them splice jug fills material, it is possible to by controlling the rotation of described flange, realize for curved mouth towards regulation；Thus realize the configuration of a pair two, it is effectively improved production efficiency.
Preferred as technique scheme, described rotary flange includes flange body, the rotary flange dish with connecting hole, is connected in described flange body prevent the spacing ring of flange body described in described rotary flange disk detachment, described flange body upper end is provided with flange plate sheet lower end and forms contraction flow region, and described rotary flange dish is set on described contraction flow region.
Preferred as technique scheme, is provided with between described rotary flange dish inwall and described contraction flow region and is easy to the bearing that described rotary flange dish rotates.
Preferred as technique scheme, described rotary flange dish is provided with the cannelure matched with described spacing ring, so that described rotary flange dish lower end flushes with described flange body lower end.
Preferred as technique scheme, the top and bottom end face of described flange body is equipped with ring gasket groove.
In sum, the method have the advantages that
The present invention is capable of operating from mixed powder to the continuous prodution moulding wood granule, and in production process, it is not necessary to workman pays labour, it is only necessary to monitoring industrial processes, not only production efficiency is high, the most not pollutes production environment, meets the theory of green production.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention；
Fig. 2 is the structural representation of high-speed mixer of the present invention；
Fig. 3 is the structural representation of double screw extruder of the present invention；
Fig. 4 is the structural representation of granule materials collecting device of the present invention；
The enlarged drawing in Tu5Shi Tu2Zhong A district；
The enlarged drawing in Tu6Shi Tu2Zhong B district；
Fig. 7 is the shell wall structural representation of the cylinder of high-speed mixer of the present invention；
Fig. 8 is the perspective view of the splice jug of granule materials collecting device of the present invention；
Fig. 9 is the structural representation of the rotary flange of granule materials collecting device of the present invention；
Figure 10 is the sectional view of the rotary flange of granule materials collecting device of the present invention；
Figure 11 is the enlarged drawing in C district in Figure 10 of the present invention.
In figure, 100-the first screw rod conveyor, 200-high-speed mixer, 300-the second screw rod conveyor, 400-double screw extruder, 500-granule materials collecting device；
201-cylinder, 202-discharging opening, 203-cover, 204-1-the first suction port, 204-2-the second suction port, 209-latch components, 2011-inner bag, 2012-chuck, 2021-moisture exhausting port, 2092-metal buckle, 20121-heating layer, 20122-heat-insulation layer, 20123-outer shell；
402-feed hopper, 403-mair motor, 404-machine barrel, 4041-preheating zone, 4042-gradient-heated district, 4043-discharger；
502-splice jug, 5011-storage material bucket, 5012 feeding fans, 5013-feeder sleeve, 5014-temporary storage tank, 5015-shedding mechanism, 50141-contraction flow region, the curved mouth of 50151-, 50152-rotary flange, 501521-flange body, 5015221-connecting hole, 501522-rotary flange dish, 501523-spacing ring, 5015211-flange plate sheet, 5015212-contraction flow region, 5015222-cannelure, 5015213-ring gasket groove.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
This detailed description of the invention is only explanation of the invention, is not limitation of the present invention.Those skilled in the art after the description having read the present invention, done any change, as long as in the range of claims, all will be protected by Patent Law.
As it is shown in figure 1, one moulds wood granulating system, including the first screw rod conveyor 100 being sequentially connected with, high-speed mixer the 200, second screw rod conveyor 300, double screw extruder 400 and granule materials collecting device 500.
Such as Fig. 1-2, shown in 5-7, high-speed mixer 200 includes that control chamber, the motor being controlled by described control chamber and inside are provided with the cylinder 201 that rotation status is controlled by the stirring paddle of described motor, described cylinder 201 is provided with discharging opening 202, has cover 203, the first suction port 204-1 and the second suction port 204-2 of charging aperture；Described cover 203 is articulated with cylinder 201 so that described cover 203 forms hinge and opening and closing part, and the keying of described opening and closing part is controlled by the first Hydraulic Conirol Unit；Described discharging opening 202 includes that moisture exhausting port 2021, the keying of described moisture exhausting port 2021 are controlled by the second Hydraulic Conirol Unit；Described first suction port 204-1 is arranged at the top of described cover 203, and described second suction port 204-2 is arranged at the top of described discharging opening 202, and described first, second suction port 204-1,204-2 is connected with dust arrester by pipeline.Being provided with latch components 209 between described cover 203 and described cylinder 201, described latch components includes that the projection 2091 being positioned at the opening and closing part of cover 203 realizes the metal buckle 2092 sealed to described cover 203 with being hinged on described top, cylinder 201 lateral wall and matching with described protruding 2091.Described cylinder 201 is made up of inner bag 2011 and chuck 2012, is provided with liquid heat-conducting medium between inner bag 2011 and chuck 2012；Described chuck 2012 includes heating layer 20121, heat-insulation layer 20122 and outer shell 20123.Described inner bag 2011 side is waveform concave-convex curved surface.
Such as Fig. 1, shown in 3, double screw extruder 400 includes feed hopper 402, mair motor 403, machine barrel 404 and two screw rods being located in described machine barrel 404, described feed hopper 402 and mair motor 403 are positioned at described machine barrel 404 feed end, described feed hopper 402 is positioned at above mair motor 403, described screw rod is driven by described mair motor 403, described machine barrel 404 starts to be sequentially provided with preheating zone 4041, gradient-heated district 4042 and discharger 4043 from feed end, and described gradient-heated district 4042 is divided into intensification section, soaking zone and fluxing zone.
Such as Fig. 4, shown in 8-11, granule materials collecting device 500 includes that material provisioning component and splice jug 502, described material provisioning component include storage material bucket 5011, feeding fan 5012, feeder sleeve 5013, temporary storage tank 5014 and shedding mechanism 5015；Described temporary storage tank 5014 is connected with described feeding fan 5012 by described feeder sleeve 5013, and contraction flow region 50141 is formed at described temporary storage tank 5014 bottom, and described contraction flow region 50141 lower end is provided with described shedding mechanism 5015；Described splice jug 502 is positioned at below described temporary storage tank 5014, so that material drops down onto described splice jug 502 after described shedding mechanism 5015 is discharged.Being provided with blade 5021 in described splice jug 502, lower section is provided with motor 5023, and described blade 5021 is connected by rotating shaft 5022 with described motor 5023；Described rotating shaft 5022 is positioned at the center of described splice jug 502.Described shedding mechanism includes that curved mouth 50151 and rotary flange 50152, described curved mouth 50151 are rotationally connected with described contraction flow region 50141 lower end by described rotary flange 50152；Described splice jug 502 has two；When rotating described rotary flange 50152, toggling towards between said two splice jug 502 of described curved mouth 50151.Described rotary flange 50152 includes flange body 501521, the rotary flange dish 501522 with connecting hole 5015221, is connected in described flange body 501521 prevent described rotary flange dish 501522 from departing from the spacing ring 501523 of described flange body 501521, described flange body 501521 upper end is provided with flange plate sheet 5015211 lower end and forms contraction flow region 5015212, and described rotary flange dish 501522 is set on described contraction flow region 5015212.It is provided with between described rotary flange dish 1522 inwall and described contraction flow region 15212 and is easy to the bearing that described rotary flange dish 1522 rotates.Described rotary flange dish 501522 is provided with the cannelure 5015222 matched with described spacing ring 501523, so that described rotary flange dish 501522 lower end flushes with described flange body 501521 lower end.It is equipped with ring gasket groove 5015213 on the top and bottom end face of described flange body 1521.Described ring gasket groove 5015213 is used for placing sealing ring.
Claims (8)
1. mould wood granulating system for one kind, including the first screw rod conveyor (100) being sequentially connected with, high-speed mixer (200), second screw rod conveyor (300), double screw extruder (400) and granule materials collecting device (500), it is characterized in that: described high-speed mixer (200) includes control chamber, the motor and the inside that are controlled by described control chamber are provided with the cylinder (201) that rotation status is controlled by the stirring paddle of described motor, discharging opening (202) it is provided with on described cylinder (201), there is the cover (203) of charging aperture, first suction port (204-1) and the second suction port (204-2)；Described cover (203) is articulated with cylinder (201) so that described cover (203) forms hinge and opening and closing part, and the keying of described opening and closing part is controlled by the first Hydraulic Conirol Unit；Described discharging opening (202) includes that moisture exhausting port (2021), the keying of described moisture exhausting port (2021) are controlled by the second Hydraulic Conirol Unit；Described first suction port (204-1) is arranged at the top of described cover (203), described second suction port (204-2) is arranged at the top of described discharging opening (202), and described first, second suction port (204-1,204-2) is connected with dust arrester by pipeline；
Described double screw extruder (400) includes feed hopper (402), mair motor (403), machine barrel (404) and two screw rods being located in described machine barrel (404), described feed hopper (402) and mair motor (403) are positioned at described machine barrel (404) feed end, described feed hopper (402) is positioned at mair motor (403) top, described screw rod is driven by described mair motor (403), described machine barrel (404) starts to be sequentially provided with preheating zone (4041) from feed end, gradient-heated district (4042) and discharger (4043), described gradient-heated district (4042) is divided into intensification section, soaking zone and fluxing zone；
Described granule materials collecting device (500) includes material provisioning component and splice jug (502), and described material provisioning component includes storage material bucket (5011), feeding fan (5012), feeder sleeve (5013), temporary storage tank (5014) and shedding mechanism (5015)；Described temporary storage tank (5014) is connected with described feeding fan (5012) by described feeder sleeve (5013), contraction flow region (50141) is formed at described temporary storage tank (5014) bottom, and described contraction flow region (50141) lower end is provided with described shedding mechanism (5015)；Described splice jug (502) is positioned at described temporary storage tank (5014) lower section, so that material drops down onto described splice jug (502) after described shedding mechanism (5015) is discharged；
Described cylinder (201) is made up of inner bag (2011) and chuck (2012), is provided with liquid heat-conducting medium between inner bag (2011) and chuck (2012)；Described chuck (2012) includes heating layer (20121), heat-insulation layer (20122) and outer shell (20123)；
Being provided with blade (5021) in described splice jug (502), lower section is provided with motor (5023), described blade (5021) and described motor (5023) and is connected by rotating shaft (5022)；Described rotating shaft (5022) is positioned at the center of described splice jug (502).
One the most according to claim 1 moulds wood granulating system, it is characterized in that: be provided with latch components (209) between described cover (203) and described cylinder (201), described latch components includes the projection (2091) being positioned at the opening and closing part of cover (203) and is hinged on described cylinder (201) top, lateral wall and matches with described projection (2091) thus realize the metal buckle (2092) sealed to described cover (203).
One the most according to claim 1 moulds wood granulating system, it is characterised in that: described inner bag (2011) side is waveform concave-convex curved surface.
One the most according to claim 1 moulds wood granulating system, it is characterized in that: described shedding mechanism includes curved mouth (50151) and rotary flange (50152), described curved mouth (50151) is rotationally connected with described contraction flow region (50141) lower end by described rotary flange (50152)；Described splice jug (502) has two；When rotating described rotary flange (50152), toggling towards between said two splice jug (502) of described curved mouth (50151).
One the most according to claim 4 moulds wood granulating system, it is characterized in that: described rotary flange (50152) includes flange body (501521), there is the rotary flange dish (501522) of connecting hole (5015221), it is connected in described flange body (501521) spacing ring (501523) preventing described rotary flange dish (501522) from departing from described flange body (501521), described flange body (501521) upper end is provided with flange plate sheet (5015211) lower end and forms contraction flow region (5015212), described rotary flange dish (501522) is set on described contraction flow region (5015212).
One the most according to claim 5 moulds wood granulating system, it is characterised in that: it is provided with between described rotary flange dish (501522) inwall and described contraction flow region (5015212) and is easy to the bearing that described rotary flange dish (501522) rotates.
One the most according to claim 6 moulds wood granulating system, it is characterized in that: described rotary flange dish (501522) is provided with the cannelure (5015222) matched with described spacing ring (501523), so that described rotary flange dish (501522) lower end flushes with described flange body (501521) lower end.
One the most according to claim 7 moulds wood granulating system, it is characterised in that: it is equipped with ring gasket groove (5015213) on the top and bottom end face of described flange body (501521).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786305.XA CN104441314B (en) | 2014-12-18 | 2014-12-18 | One moulds wood granulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786305.XA CN104441314B (en) | 2014-12-18 | 2014-12-18 | One moulds wood granulating system |
Publications (2)
| Publication Number | Publication Date |
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| CN104441314A CN104441314A (en) | 2015-03-25 |
| CN104441314B true CN104441314B (en) | 2016-08-31 |
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| JP6199260B2 (en) * | 2014-08-28 | 2017-09-20 | 富士フイルム株式会社 | Zoom lens and imaging device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101654536A (en) * | 2008-08-20 | 2010-02-24 | 北京清大华研科技发展有限公司 | Method for producing nano plastic-wood composite section |
| CN101955676A (en) * | 2010-06-09 | 2011-01-26 | 常熟通江机械有限公司 | Plastic wood composite material and preparation method |
| CN103240940A (en) * | 2012-02-15 | 2013-08-14 | 宁波禾隆新材料有限公司 | Plastic-wood coextrusion section material and production method thereof |
| CN204322346U (en) * | 2014-12-18 | 2015-05-13 | 安吉威龙塑木环保材料有限公司 | One moulds wooden granulating system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55128417A (en) * | 1979-03-27 | 1980-10-04 | Kobe Steel Ltd | Granulating device |
| JPS55137912A (en) * | 1979-04-13 | 1980-10-28 | Kobe Steel Ltd | Granulating device for plastic resin material and the like |
| JPH1134045A (en) * | 1997-07-24 | 1999-02-09 | Mitsubishi Chem Mkv Co | Production of vinyl chloride resin granule |
-
2014
- 2014-12-18 CN CN201410786305.XA patent/CN104441314B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101654536A (en) * | 2008-08-20 | 2010-02-24 | 北京清大华研科技发展有限公司 | Method for producing nano plastic-wood composite section |
| CN101955676A (en) * | 2010-06-09 | 2011-01-26 | 常熟通江机械有限公司 | Plastic wood composite material and preparation method |
| CN103240940A (en) * | 2012-02-15 | 2013-08-14 | 宁波禾隆新材料有限公司 | Plastic-wood coextrusion section material and production method thereof |
| CN204322346U (en) * | 2014-12-18 | 2015-05-13 | 安吉威龙塑木环保材料有限公司 | One moulds wooden granulating system |
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Effective date of registration: 20180829 Address after: 313000 Anji County, Huzhou City, Zhejiang Province Patentee after: Zhejiang Kun Hong new materials Co., Ltd. Address before: 313300 Zhejiang Anji city Huzhou County, the town of Yuta village Anji Weilong plastic wood environmental protection materials Co., Ltd. Patentee before: ANJI WEILONG WPC ENVIRONMENTAL PROTECTION MATERIALS CO., LTD. |
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