CN105527078A - Device for measuring zipper self-locking force - Google Patents
Device for measuring zipper self-locking force Download PDFInfo
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- CN105527078A CN105527078A CN201510865816.5A CN201510865816A CN105527078A CN 105527078 A CN105527078 A CN 105527078A CN 201510865816 A CN201510865816 A CN 201510865816A CN 105527078 A CN105527078 A CN 105527078A
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- upper holder
- locking
- zipper
- holder block
- self
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Slide Fasteners (AREA)
Abstract
A device for measuring zipper self-locking force comprises a frame body, a fixing member which is arranged at one side of the frame body, a guide channel which is arranged at the other side of the frame body, a moving member which is arranged inside the guide channel in a slidable mode, an elastic member which is arranged between the moving member and the fixing member and drives the two members to move in opposite directions. The fixing member is provided with a first clamping part which is used for clamping a strap of one side of the zipper; the moving member is provided with a second clamping part which is used for clamping a strap of the other side of the zipper; the elastic force of the elastic member equals to the maximum self-locking force of the zipper to be measured. According to the device, a user only needs to set a rated elastic force value which equals to the maximum self-locking force of a zipper to detect whether the self-locking force of the zipper meets a required self-locking force or not; the device is simple to use and easy to carry, and has strong mobility and applicability.
Description
Technical field
The present invention relates to a kind of zipper feature checkout equipment, refer in particular to a kind of measurement mechanism of Zipper self-locking brute force.
Background technology
Self-locking slide fastener is made up of chain tooth, pull head, spacing code or locking member etc.Its medium chain tooth is key component, and it directly determines the layback intensity of slide fastener.General slide fastener has two panels chain band, every sheet chain band is shaped with a row chain tooth, the interlaced arrangement of two row chain teeth.Pull head clamps two side chain teeth, slides by pull head, and the chain tooth of both sides can be made to engage each other or throw off.
For now, evaluate in self-locking slide fastener quality and have the index of a particular importance to be exactly self-locking brute force, a lot of slide fastener will carry out Characteristics Detection often to be needed to measure its self-locking brute force, can know such slide fastener and whether meet relevant industries standard.
For now, existing production scene test Zipper self-locking brute force is that this instrument volume is all larger with quality with instrument test, is not easy resettlement, and higher to the requirement of environment, not easily in production scene long storage time.As long as and the requirement of a lot of domestic manufacturers to self-locking brute force is that to reach certain value just passable, does not seek knowledge how many.But for now, surveying instrument is measured its concrete numerical value often during current use, so not only need frequently to carry out counting sorting, and instrument and equipment all costly, timely measurement demand everywhere can not be met.
Summary of the invention
The invention provides a kind of measurement mechanism of Zipper self-locking brute force, its fundamental purpose be to overcome the volume existed in the powerful instrument of existing test Zipper self-locking comparatively large, carry inconvenience and the defect that wastes time and energy of its measuring method.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of measurement mechanism of Zipper self-locking brute force, comprise a support body, this support body side is provided with a fixture, opposite side is provided with a guide channel, in this guide channel, a movable part is installed slidably, one is mounted with for ordering about the two from the elastic component moved between this movable part with fixture, described fixture is provided with the first clamping part for clamping slide fastener side strap, described movable part is provided with the second clamping part for clamping slide fastener opposite side strap, and the elastic force of described elastic component is powerful suitable with the maximum self-locking needing to carry out the slide fastener measured.
Further, also comprise one and be installed on retainer on support body, this retainer is provided with a stop bearing pin, described movable part is provided with the jack coordinating this stop bearing pin work.
Further, described support body is provided with a U-shaped seat at its top, and described retainer comprises one and described U-shaped seat swings to be rotatably installed in the middle part of it elastic device that described stop bearing pin and that cross bar, is arranged at this swing cross bar one end is arranged at this swing cross bar other end.
Further, described stop bearing pin is arranged at and swings bottom, cross bar one end and arrange in longitudinal bottom, and described elastic device is one the 3rd Compress Spring, and its one end is connected to the top of described support body, and the other end is connected to the bottom of the described swing cross bar other end.
Further, described second clamping part comprises the one second lower support block, be fixedly connected on described movable part and can sliding up and down to be installed on the second upper holder block above this second lower support block, being installed between the second lower support block and the second upper holder block and ordering about the two from the second Compress Spring moved and to be installed in above the second upper holder block and the second cam pack for limiting the second upper holder block lifting position.
Further, the composition surface of described second lower support block and the second upper holder block is provided with the second corrugated surface for preventing zipper cloth belt from sliding or the second serrated face, described second cam pack comprising and one runs through the second guidepost of the second lower support block and the second upper holder block, the second register pin be fixedly installed on this second guidepost, being eccentricly rotationally installed on one second cam bit on this second register pin and for controlling the second handle that this second cam bit rotates, described second cam bit lower end is connected to the end face of described second upper holder block.
Further, described first clamping part comprises the one first lower support block, be fixedly connected on described fixture and can sliding up and down to be installed on the first upper holder block above this first lower support block, being installed between the first lower support block and the first upper holder block and ordering about the two from the first Compress Spring moved and to be installed in above the first upper holder block and the first cam pack for limiting the first upper holder block lifting position.
Further, the composition surface of described first lower support block and the first upper holder block is provided with the first corrugated surface for preventing zipper cloth belt from sliding or the first serrated face, described first cam pack comprising and one runs through the first guidepost of the first lower support block and the first upper holder block, the first register pin be fixedly installed on this first guidepost, being eccentricly rotationally installed on one first cam bit on this first register pin and for controlling the first handle that this first cam bit rotates, described first cam bit lower end is connected to the end face of described first upper holder block.
Further, described elastic component is at least one 4th Compress Spring, and the composition surface of described fixture and movable part is provided with the mounting hole for assembling the 4th Compress Spring.
Further, described support body is provided with hurdle, both sides, and described guide channel is one limit by this hurdle, both sides the locating slot formed, and the bottom of described movable part is installed in this locating slot.
Compared to the prior art, the beneficial effect that the present invention produces is:
1, structure of the present invention is simple, practical, can from the movable part of motion and fixture by arranging an elastic component cooperation, user only needs to be clamped in the both sides of slide fastener on the first clamping part and the second clamping part respectively, owing to receiving the elastic force effect of elastic component between movable part and fixture, and the side of slide fastener and the first clamping part Colaesce one, opposite side and the second clamping part Colaesce one, thus the effect of Zipper self-locking brute force can be also subject between movable part and fixture, when self-locking brute force is greater than elastic force, movable part is not separated with fixture, when self-locking brute force is less than elastic force, slide fastener is just broken by elastic force effect, thus user only needs the specified elastic force numerical value of setting one, the maximum self-locking of numerical value and slide fastener is quite powerful, just detect slide fastener by this device and whether meet the powerful requirement of its self-locking, so not only using method is simple, and be easy to carry, there is stronger mobility and practicality.
2, in the present invention, by arranging described retainer and stop bearing pin, user can be fastened on the jack of movable part by this stop bearing pin, it is made to stop sliding, at this moment can be convenient to user and slide fastener both sides strap is contained in the first clamping part and the second clamping part respectively, to complete the measurement of self-locking brute force smoothly.
3, in the present invention, clamp by the first clamping part and/or the second clamping part being arranged to carry out control by cam bit and Compress Spring and unclamping, so not only simplify slide fastener both sides strap and put process, reduce the labour intensity put, and be conducive to shortening further putting the time, improve and put efficiency.
4, in the present invention, by arranging corrugated surface and/or serrated face, the frictional resistance between zipper cloth belt and the first clamping part and/or the second clamping part can be improved, reducing the phenomenon that loosening appears in strap in clamping and measuring process, improving the levels of precision of measurement.
5, in the present invention, limiting by this hurdle, both sides the locating slot formed by arranging, tracks can be provided for the movable part of rack section, movable part was departed from along locating slot up and down there will not be.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of support body described in the present invention.
The cooperation schematic diagram that Fig. 3 is fixture described in the present invention and movable part.
Fig. 4 is the structural representation of movable part described in the present invention.
Embodiment
With reference to the accompanying drawings the specific embodiment of the present invention is described.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4.A kind of measurement mechanism 1 of Zipper self-locking brute force, comprise a support body 2, this support body 2 side is provided with a fixture 3, opposite side is provided with a guide channel 4, one movable part 5 is installed in this guide channel 4 slidably, one is mounted with for ordering about the two from the elastic component 6 moved between this movable part 5 with fixture 3, described fixture 3 is provided with the first clamping part 8 for clamping slide fastener 7 side strap 71, described movable part 5 is provided with the second clamping part 9 for clamping slide fastener 7 opposite side strap 72, the elastic force of described elastic component 6 is powerful suitable with the maximum self-locking needing to carry out the slide fastener 7 measured.Described elastic component 6 is at least one 4th Compress Spring 60, and the composition surface of described fixture 3 and movable part 5 is provided with the mounting hole 61 for assembling the 4th Compress Spring 60.Can from the movable part 5 of motion and fixture 3 by arranging elastic component 6 cooperation, user only needs the both sides of slide fastener 7 to be clamped in respectively on the first clamping part 8 and the second clamping part 9, owing to receiving the elastic force effect of elastic component 6 between movable part 5 and fixture 3, and the side of slide fastener 7 and the first clamping part 8 Colaesce one, opposite side and the second clamping part 9 Colaesce one, thus the effect of slide fastener 7 self-locking brute force can be also subject between movable part 5 and fixture 3, when self-locking brute force is greater than elastic force, movable part 5 is not separated with fixture 3, when self-locking brute force is less than elastic force, slide fastener 7 is just broken by elastic force effect, thus user only needs the specified elastic force numerical value of setting one, the maximum self-locking of numerical value and slide fastener 7 is quite powerful, just detect slide fastener 7 by this device and whether meet the powerful requirement of its self-locking, so not only using method is simple, and be easy to carry, there is stronger mobility and practicality.Described support body 2 is provided with hurdle, both sides 28, and described guide channel 4 is one limit by this hurdle, both sides 28 locating slot 29 formed, and the bottom of described movable part 5 is installed in this locating slot 29.Limiting by this hurdle, both sides the locating slot 29 formed by arranging, tracks can be provided for the movable part 5 of rack section, movable part 5 was departed from along locating slot 29 up and down there will not be.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4.Measurement mechanism 1 also comprises one and is installed on retainer 20 on support body 2, and this retainer 20 is provided with a stop bearing pin 21, described movable part 5 is provided with the jack 50 coordinating the work of this stop bearing pin 21.Described support body 2 is provided with a U-shaped seat 22 at its top, and described retainer 20 comprises one and described U-shaped seat 22 swings to be rotatably installed in the middle part of it elastic device 24 that described stop bearing pin 21 and that cross bar 23, is arranged at this swing cross bar 23 one end is arranged at this swing cross bar 23 other end.Described stop bearing pin 21 is arranged at and swings bottom, cross bar 23 one end and arrange in longitudinal bottom, and described elastic device 24 is one the 3rd Compress Spring 240, and its one end is connected to the top of described support body 2, and the other end is connected to the bottom of described swing cross bar 23 other end.By arranging described retainer 20 and stop bearing pin 21, user can be fastened on the jack 50 of movable part 5 by this stop bearing pin 21, it is made to stop sliding, at this moment can be convenient to user and slide fastener 7 both sides strap is contained in the first clamping part 8 and the second clamping part 9 respectively, to complete the measurement of self-locking brute force smoothly.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4.Described second clamping part 9 comprises the one second lower support block 90, be fixedly connected on described movable part 5 and can sliding up and down to be installed on the second upper holder block 91 above this second lower support block 90, being installed between the second lower support block 90 and the second upper holder block 91 and ordering about the two from the second Compress Spring 92 moved and to be installed in above the second upper holder block 91 and the second cam pack 93 for limiting the second upper holder block 91 lifting position.The composition surface of described second lower support block 90 and the second upper holder block 91 is provided with the second corrugated surface 94 or the second serrated face 94 for preventing slide fastener 7 strap from sliding, by arranging corrugated surface and/or serrated face, the frictional resistance between slide fastener 7 strap and the first clamping part 8 and/or the second clamping part 9 can be improved, reduce the phenomenon that loosening appears in strap in clamping and measuring process, improve the levels of precision measured.Described second cam pack 93 comprising and one runs through the second guidepost 95 of the second lower support block 90 and the second upper holder block 91, the second register pin 96 be fixedly installed on this second guidepost 95, being eccentricly rotationally installed on one second cam bit 97 on this second register pin 96 and for controlling the second handle 98 that this second cam bit 97 rotates, described second cam bit 97 lower end is connected to the end face of described second upper holder block 91.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4.Described first clamping part 8 comprises the one first lower support block 80, be fixedly connected on described fixture 3 and can sliding up and down to be installed on the first upper holder block 81 above this first lower support block 80, being installed between the first lower support block 80 and the first upper holder block 81 and ordering about the two from the first Compress Spring (not shown) of moving and to be installed in above the first upper holder block 81 and the first cam pack 83 for limiting the first upper holder block 81 lifting position.The composition surface of described first lower support block 80 and the first upper holder block 81 is provided with the first corrugated surface 84 or the first serrated face 84 for preventing slide fastener 7 strap from sliding, described first cam pack 83 comprising and one runs through the first guidepost of the first lower support block 80 and the first upper holder block 81, the first register pin be fixedly installed on this first guidepost, being eccentricly rotationally installed on one first cam bit on this first register pin and for controlling the first handle 86 that this first cam bit 85 rotates, described first cam bit 85 lower end is connected to the end face of described first upper holder block 81.Clamp by the first clamping part 8 and/or the second clamping part 9 being arranged to carry out control by cam bit and Compress Spring and unclamping, so not only simplify slide fastener 7 both sides strap and put process, reduce the labour intensity put, and be conducive to shortening further putting the time, improve and put efficiency.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4.Principle of work of the present invention is as follows: the pass for the 4th Compress Spring 60 reduction length and required force of compression is: F (force of compression)=K(stage clip elasticity coefficient) × L(amount of spring compression).This programme is exactly around this principle design.
This programme is made up of four parts, mainly tension force control section, holder part, stopping part, rack section.Principle of work is: according to F (force of compression)=K(stage clip elasticity coefficient) × L(amount of spring compression) design the amount of force compressing latter two test the 4th Compress Spring 60.During test, when unclamping stopping part, slide fastener 7 is opened with under the effect of the 4th Compress Spring 60 in test, and illustrate that its self-locking brute force is less than F, test result is not up to standard.When unclamping stopping part, slide fastener 7 is not opened with under the effect of the 4th Compress Spring 60 in test, and illustrate that its self-locking brute force is greater than F, test result is up to standard.
Described retainer 20 principle of work adopts lever principle: due to the acting force of the 3rd Compress Spring 240, rotate to swing cross bar 23 1 around U-shaped seat 22, and stop bearing pin 21 with swing cross bar 23 is connected be lean on U-shaped seat 22 connect, due to the effect of pilot hole on frame side riser, stop bearing pin 21 can do the motion of vertical side riser and can not depart to other directions, when upper movable part 5 is depressed, be pressed onto bottom, under the acting force of jack-up the 3rd Compress Spring 240, swing cross bar 23 to move around U-shaped seat 22, and then pressure stop bearing pin 21 penetrates in the jack 50 of movable part 5, like this, even if hand is unclamped, upper movable part 5 also can not rebound because of the effect of the 4th Compress Spring 60.When needs are tested, only need will swing one end of cross bar 23 the 3rd Compress Spring 240 to pressing down, stop bearing pin 21 will be taken up, and goes up movable part 5 like this and moves upward under the 4th Compress Spring 60 acts on.
The principle of work of described second clamping part 9 is: the second cam bit 97 is arranged on the second register pin 96 for bias, can rotate around the second register pin 96.Second upper holder block 91 is pressed in by the second cam bit 97 on the second lower support block 90 in upper movable part.Second upper holder block 91 is connected by the second guidepost 95 with in the middle of the second lower support block 90, the middle stage clip group be made up of one group four the second Compress Springs 92, and the second upper holder block 91 can be up and down along the second guidepost 95.When high point cantact second upper holder block 91 of the second cam bit 97, due to the restriction of the second guidepost 95 length, strap tightly can be pressed in the middle of the second upper holder block 91 and the second lower support block 90, thus reach the effect compressing zipper cloth belt.When the second cam bit 97 is rotated 180 °, low point cantact second upper holder block 91, second upper holder block 91 of the second cam bit 97 is by jack-up under the effect of stage clip group, and this unclamps zipper cloth belt.
Above are only the specific embodiment of the present invention, but design concept of the present invention is not limited thereto, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading scope.
Claims (10)
1. the measurement mechanism of a Zipper self-locking brute force, it is characterized in that: comprise a support body, this support body side is provided with a fixture, opposite side is provided with a guide channel, in this guide channel, a movable part is installed slidably, one is mounted with for ordering about the two from the elastic component moved between this movable part with fixture, described fixture is provided with the first clamping part for clamping slide fastener side strap, described movable part is provided with the second clamping part for clamping slide fastener opposite side strap, the elastic force of described elastic component is powerful suitable with the maximum self-locking needing to carry out the slide fastener measured.
2. the measurement mechanism of a kind of Zipper self-locking brute force as claimed in claim 1, is characterized in that: also comprise one and be installed on retainer on support body, this retainer is provided with a stop bearing pin, described movable part is provided with the jack coordinating this stop bearing pin work.
3. the measurement mechanism of a kind of Zipper self-locking brute force as claimed in claim 2, it is characterized in that: described support body is provided with a U-shaped seat at its top, described retainer comprises one and described U-shaped seat swings to be rotatably installed in the middle part of it elastic device that described stop bearing pin and that cross bar, is arranged at this swing cross bar one end is arranged at this swing cross bar other end.
4. the measurement mechanism of a kind of Zipper self-locking brute force as claimed in claim 3, it is characterized in that: described stop bearing pin is arranged at and swings bottom, cross bar one end and arrange in longitudinal bottom, described elastic device is one the 3rd Compress Spring, its one end is connected to the top of described support body, and the other end is connected to the bottom of the described swing cross bar other end.
5. the measurement mechanism of a kind of Zipper self-locking brute force as claimed in claim 4, is characterized in that: described second clamping part comprises the one second lower support block, be fixedly connected on described movable part and can sliding up and down to be installed on the second upper holder block above this second lower support block, being installed between the second lower support block and the second upper holder block and ordering about the two from the second Compress Spring moved and to be installed in above the second upper holder block and the second cam pack for limiting the second upper holder block lifting position.
6. the measurement mechanism of a kind of Zipper self-locking brute force as claimed in claim 3, it is characterized in that: the composition surface of described second lower support block and the second upper holder block is provided with the second corrugated surface for preventing zipper cloth belt from sliding or the second serrated face, described second cam pack comprises the second guidepost that runs through the second lower support block and the second upper holder block, be fixedly installed in the second register pin on this second guidepost, bias is installed on one second cam bit on this second register pin and the second handle for controlling the rotation of this second cam bit rotationally, described second cam bit lower end is connected to the end face of described second upper holder block.
7. the measurement mechanism of a kind of Zipper self-locking brute force as claimed in claim 3, is characterized in that: described first clamping part comprises the one first lower support block, be fixedly connected on described fixture and can sliding up and down to be installed on the first upper holder block above this first lower support block, being installed between the first lower support block and the first upper holder block and ordering about the two from the first Compress Spring moved and to be installed in above the first upper holder block and the first cam pack for limiting the first upper holder block lifting position.
8. the measurement mechanism of a kind of Zipper self-locking brute force as claimed in claim 7, it is characterized in that: the composition surface of described first lower support block and the first upper holder block is provided with the first corrugated surface for preventing zipper cloth belt from sliding or the first serrated face, described first cam pack comprises the first guidepost that runs through the first lower support block and the first upper holder block, be fixedly installed in the first register pin on this first guidepost, bias is installed on one first cam bit on this first register pin and the first handle for controlling the rotation of this first cam bit rotationally, described first cam bit lower end is connected to the end face of described first upper holder block.
9. the measurement mechanism of a kind of Zipper self-locking brute force as claimed in claim 1, it is characterized in that: described elastic component is at least one 4th Compress Spring, the composition surface of described fixture and movable part is provided with the mounting hole for assembling the 4th Compress Spring.
10. the measurement mechanism of a kind of Zipper self-locking brute force as claimed in claim 1, is characterized in that: described support body is provided with hurdle, both sides, and described guide channel is one limit by this hurdle, both sides the locating slot formed, and the bottom of described movable part is installed in this locating slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510865816.5A CN105527078B (en) | 2015-12-02 | 2015-12-02 | A kind of measurement apparatus of Zipper self-locking strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510865816.5A CN105527078B (en) | 2015-12-02 | 2015-12-02 | A kind of measurement apparatus of Zipper self-locking strength |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105527078A true CN105527078A (en) | 2016-04-27 |
| CN105527078B CN105527078B (en) | 2017-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510865816.5A Active CN105527078B (en) | 2015-12-02 | 2015-12-02 | A kind of measurement apparatus of Zipper self-locking strength |
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Citations (6)
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| US2429055A (en) * | 1945-06-14 | 1947-10-14 | Us Rubber Co | Slide fastener wear testing machine |
| US4102180A (en) * | 1977-06-30 | 1978-07-25 | The United States Of America As Represented By The Secretary Of The Army | Slide fastener endurance tester |
| CN202603815U (en) * | 2012-03-07 | 2012-12-19 | 福建浔兴拉链科技股份有限公司 | Self-locking detection device of zipper head |
| CN203101181U (en) * | 2013-01-28 | 2013-07-31 | 福建浔兴拉链科技股份有限公司 | Zipper splitting and tearing detection device |
| CN203385618U (en) * | 2013-06-21 | 2014-01-08 | 詹冬梅 | Pulling force measuring device |
| CN105021462A (en) * | 2015-08-17 | 2015-11-04 | 吴江市华运纺织品有限公司 | Large jacquard weave fabrics pulling force check out test set |
-
2015
- 2015-12-02 CN CN201510865816.5A patent/CN105527078B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2429055A (en) * | 1945-06-14 | 1947-10-14 | Us Rubber Co | Slide fastener wear testing machine |
| US4102180A (en) * | 1977-06-30 | 1978-07-25 | The United States Of America As Represented By The Secretary Of The Army | Slide fastener endurance tester |
| CN202603815U (en) * | 2012-03-07 | 2012-12-19 | 福建浔兴拉链科技股份有限公司 | Self-locking detection device of zipper head |
| CN203101181U (en) * | 2013-01-28 | 2013-07-31 | 福建浔兴拉链科技股份有限公司 | Zipper splitting and tearing detection device |
| CN203385618U (en) * | 2013-06-21 | 2014-01-08 | 詹冬梅 | Pulling force measuring device |
| CN105021462A (en) * | 2015-08-17 | 2015-11-04 | 吴江市华运纺织品有限公司 | Large jacquard weave fabrics pulling force check out test set |
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| Title |
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| 金壮: "《服装品质管理实用手册（第二版）》", 31 August 2005, 中国纺织出版社 * |
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| CN105527078B (en) | 2017-10-17 |
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Effective date of registration: 20180412 Address after: Hai Cun Bin Xi Lu Shenhu town Jinjiang city Fujian province 362246 Quanzhou City, No. 18 Patentee after: Fujian Jinjiang xunxing zipper Technology Co. Ltd. Address before: 362246 Fujian city of Quanzhou province Jinjiang City Shenhu Ukraine drain ditch East Industrial Zone Patentee before: Fujian SBS Zipper Science & Technology Co., Ltd. |
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