CN102306892A - Manufacturing method for high-frequency high-speed data connector - Google Patents
Manufacturing method for high-frequency high-speed data connector Download PDFInfo
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- CN102306892A CN102306892A CN201110177558A CN201110177558A CN102306892A CN 102306892 A CN102306892 A CN 102306892A CN 201110177558 A CN201110177558 A CN 201110177558A CN 201110177558 A CN201110177558 A CN 201110177558A CN 102306892 A CN102306892 A CN 102306892A
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Abstract
The invention discloses a manufacturing method for a high-frequency high-speed data connector. The manufacturing method comprises the following steps of: (1) manufacturing a high-frequency high-speed data transmission cable; and (2) providing two connectors, and welding the two ends of the high-frequency high-speed data transmission cable to the two connectors respectively, wherein the step (1) comprises the following steps of: (A1) extruding and molding an insulating layer to form signal wires on conductors; (A2) extruding and molding an insulating layer to form a null line on the conductors; (A3) providing conductors to form ground wires; (A4) arranging the signal wires, the null line and the ground wires in a way that the signal wires, the null line and the conductor of the ground wires are arranged into a row; (A5) covering a metal layer on the signal wires, the null line and the ground wires to form a master shielding layer; and (A6) attaching the master shielding layer to the signal wires, the null line and the ground wires by vacuum calendaring. Compared with the prior art, the method comprises fewer steps, and is simple; and the manufactured product has high anti-interference performance, a simple structure and rational layout, and is applied to Mini serial attached small computer system interfaces (SAS).
Description
Technical field
The present invention relates to a kind of connector manufacturing method, relate in particular to a kind of high-frequency high-speed data connector manufacturing approach.
Background technology
Mini SAS is used for the sata standard interface of hard disk; Can be referred to as mini SAS hard disk connector; Be mainly used in SATA (serial advanced technology attachment; The serial ATA standard interface) and SAS (serial attached Small Computer System Interface, serial SCSI standard interface).
With reference to figure 1 and Fig. 2; The insulation crust 140 that traditional mini SAS hard disk connector 100 comprises data line 110, is connected the circuit board 130 at data line 110 two ends and said circuit board 130 is installed; Said data line 110 has two and coated outside that insulation braid 120 is arranged; Said data line 110 is formed by some lead parallel arranged; Said lead comprises 111,112,113,114 and zero lines 115 of four holding wires; Said holding wire 111,112,113,114 includes four conductors that are arranged in a row 101 and coats the insulating barrier 102 of said four conductors, and four conductors of said holding wire 111,112,113,114 are respectively two earthing conductors that are arranged in two middle signal conductors and are arranged in both sides, and said insulating barrier 102 outsides are coated with sub-shield 116; Said sub-shield 116 is coated with wheat and draws layer 117; Said zero line 115 comprises four conductors that are arranged in a row 101 and the insulating barrier 102 that coats said four conductors, and said holding wire 111,112,113,114 is symmetrically distributed in said zero line 115 both sides, and the conductor in the said lead is arranged in a row; With reference to figure 3; Traditional circuit board 130 1 ends are formed with and the conveying terminal 132 that is electrically connected with the connector of outside; The other end is formed with the splicing ear 131 that is electrically connected with said data line 110; Said splicing ear 131 is totally 36 both sides up and down that are evenly distributed on circuit board 130, and every side has 18 splicing ears, and 18 splicing ears are electrically connected with 20 conductors of a single data transmission line 110 respectively.When making above-mentioned mini SAS hard disk connector 100, make corresponding lead in the data line 110 earlier, and above-mentioned lead is carried out winding displacement form data line 110; 18 splicing ears of 20 conductors that sequence line in the one single data transmission line 110 and circuit board 130 upper sides are welded (with reference to figure 3); 18 splicing ears 131 with 20 conductors that sequence line in another data line 110 and circuit board 130 downsides weld again; Use some wire harness to tie up two data lines 110, outside two data lines of tying up 110, coat the insulation braid 120 and the interface pressing of the braid 120 that will insulate again; Injection moulding insulation crust 140 forms connector outside circuit board 130 at last, accomplishes the manufacturing of mini SAS hard disk connector 100.
Yet, on the one hand,, need carry out winding displacement to the conductor in the data line 110 earlier because 20 solderable conductors in the data line 110 are received 131 last times of splicing ear, easy error during operation, and the big efficient of difficulty is low; On the other hand; As shown in Figure 3; Because every side of circuit board 130 has 18 splicing ears 131, and has 20 conductors in the data line 110, when splicing ear 131 and conductor are carried out the correspondence welding; Two adjacent earthing conductors are mediated and are welded on the earth terminal 131 in two earthing conductors that need holding wire 111,112 is adjacent and the holding wire 112,113; Make that technology is loaded down with trivial details and error rate is high, not only influence the rate of finished products of mini SAS hard disk connector 100, and reduced the production efficiency of mini SAS hard disk connector 100.
Therefore, need a kind of operation few easy to operate, the high-frequency high-speed data connector manufacturing approach that the production efficiency high finished product rate is high.
Summary of the invention
It is few easy to operate to the purpose of this invention is to provide a kind of operation, the high-frequency high-speed data connector manufacturing approach that the production efficiency high finished product rate is high.
For on realizing purpose is arranged, the invention discloses a kind of high-frequency high-speed data connector manufacturing approach, it may further comprise the steps: the high-frequency high-speed data transmission cable is made in (1); (2) two connectors are provided, the two ends of high-frequency high-speed data transmission cable are welded on respectively on the two said connectors; Wherein step (1) specifically may further comprise the steps: (A1) extrusion molding one layer insulating forms holding wire on conductor; (A2) extrusion molding one layer insulating forms zero line on conductor; (A3) provide conductor to form ground wire; (A4) said holding wire, zero line and ground wire are carried out winding displacement and the conductor of said holding wire, zero line and ground wire is arranged in a row; (A5) metal layer covers is formed total screen on said holding wire, zero line and ground wire; (A6) make said total screen and said holding wire, zero line and ground wire fit through the vacuum calendering.
The preferably, step (2) specifically may further comprise the steps: two circuit boards (B1) are provided, the conductor at said high-frequency high-speed data transmission cable two ends is welded with two circuit boards respectively; (B2) outside two said circuit boards respectively the injection moulding insulation crust form two connectors.Insulation crust is directly injection-moulded on the circuit board, makes that the structure of connector is firm, be easy to connect.
Particularly; One end of said circuit board is formed with some conveying terminals that link to each other with external interface; The other end is formed with the splicing ear of the conductor welding of some and said high-frequency high-speed data transmission cable; Some said splicing ears are evenly distributed on the upper side and the downside of said circuit board, two said high-frequency high-speed data transmission cables respectively with the welding of the splicing ear of upper side and downside.
Preferably, before the two ends with the high-frequency high-speed data transmission cable are welded on two said connectors respectively, further comprising the steps of: (C1) the said high-frequency high-speed data transmission cable of cutting makes it reach predetermined length; C2) divest total screen at said high-frequency high-speed data transmission cable two ends; (C3) thawing has divested the insulating barrier at the high-frequency high-speed data transmission cable two ends of total screen.Because the total screen of employing of the high-frequency high-speed data transmission cable that the present invention makes as screen, therefore can adopt peeling machine to divest screen is disposable, and is convenient to operation.
Preferably, need that extrusion molding one layer insulating forms holding wire on four conductors that are arranged in a row in the said step (A1), said holding wire is four, and what four said holding wires were symmetry is arranged in said zero line both sides.Like this; Two holding wires are arranged side by side in the zero line left side; Other two holding wires are arranged side by side in the zero line right side; Make in the holding wire conductor in twos one group of symmetric arrays in the zero line both sides, relative with the position of splicing ear on the circuit board in the mini SAS hard disk, make things convenient for the application of high-frequency high-speed data transmission cable in Mini SAS.
Preferably; Need extrusion molding one layer insulating formation zero line on four conductors that are arranged in a row in the step (A2); Said zero line is one and is arranged in the central authorities of said high-frequency high-speed data transmission cable, makes things convenient for the application of high-frequency high-speed data transmission cable in Mini SAS.
Preferably; The ground wire that forms in the step (A3) is two; Two said ground wires are the outermost both sides that are arranged in said high-frequency high-speed data transmission cable of symmetry, and whole cable is played better shielding action, prevent the interference of outer bound pair holding wire and the interference between the holding wire.
Preferably, step (1) also comprises step (A7), insulation film is coated on said total screen forms insulating thin layer outward, and make said insulating thin layer and said total screen fit through the vacuum calendering.
Preferably, said total screen is an aluminium foil layer, and said insulating thin layer is a laminated polyester film.
Compared with prior art, the present invention has removed the earthing conductor in the holding wire, adopts conductor as ground wire, and fits through total screen and ground wire.On the one hand, make to be electrically connected between ground wire and the total screen, and holding wire and zero line wrapped up by the total screen that is electrically connected with ground wire, thereby prevent the interference of outer bound pair holding wire and the interference between the holding wire, shield effectiveness is good; On the other hand; Earthing conductor through removing in the holding wire has reduced conductor total number in the high-frequency high-speed data transmission cable; Solved because the link subnumber owing to circuit board must be with the problem of earthing conductor kneading welding adjacent in the cable less than the conductor number of cable in traditional mini SAS hard disk connector; Not only simplified the structure of high-frequency high-speed data transmission cable; Make the present invention simple in structure, rationally distributed, and reduced the manufacturing process and the technology difficulty of high-frequency high-speed data connector, improve production efficiency of the present invention and rate of finished products; Again on the one hand, because processing the high-frequency high-speed data transmission cable, the present invention is banded, when welding with connector; Reduced and tied up operations such as wire harness, wrap insulate braid and interface pressing in the traditional handicraft; Directly contraposition welding, manufacturing process is few, and production efficiency is high.To sum up, production process of the present invention is few, and technology is simple, and the production efficiency high finished product rate is high, and the anti-tampering property of the high-frequency high-speed data connector of processing is good, is applicable to multiple occasion, and simple in structure rationally distributed.
Description of drawings
Fig. 1 is the structural representation of traditional mini SAS hard disk connector.
Fig. 2 is the cutaway view that Fig. 1 cuts open along the A-A line.
Fig. 3 is the welding sketch map of data line and circuit board in traditional mini SAS hard disk connector.
Fig. 4 is the structural representation of the high-frequency high-speed data connector that produces of high-frequency high-speed data connector manufacturing approach of the present invention.
Fig. 5 is the flow chart of high-frequency high-speed data transmission cable manufacturing approach of the present invention.
Fig. 5 a-Fig. 5 c carries out pretreated sketch map to the high-frequency high-speed data transmission cable before the high-frequency high-speed data transmission cable of the present invention welding.
Fig. 6 is the sectional view of the high-frequency high-speed data transmission cable that produces of high-frequency high-speed data connector manufacturing approach of the present invention.
Fig. 7 is the welding sketch map of high-frequency high-speed data transmission cable of the present invention and circuit board.
Embodiment
By specifying technology contents of the present invention, structural feature, realized purpose and effect, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
With reference to figure 4-Fig. 7, high-frequency high-speed data connector manufacturing approach of the present invention may further comprise the steps: (S1) make high-frequency high-speed data transmission cable 33; (S2) two connectors are provided, the two ends of high-frequency high-speed data transmission cable 31 are welded on respectively on the two said connectors, process high-frequency high-speed data connector 100.
With reference to figure 5; Step (S1) specifically may further comprise the steps: (A1) extrusion molding one layer insulating forms holding wire on conductor; Particularly; Extrusion molding one layer insulating forms holding wire on four conductors that are arranged in a row, and said holding wire is four, and what four said holding wires were symmetry is arranged in the zero line both sides; (A2) extrusion molding one layer insulating forms zero line on conductor, and particularly, extrusion molding one layer insulating forms zero line on four conductors that are arranged in a row, and said zero line is one and is arranged in the central authorities of said high-frequency high-speed data transmission cable; (A3) provide conductor to form ground wire, particularly, said ground wire is two; Two said ground wires are the outermost both sides that are arranged in said high-frequency high-speed data transmission cable of symmetry; Wherein in the step (A1)-(A3), said conductor is an aluminium material, and said insulating barrier is a soluble poly tetrafluoroethene material; (A4) said holding wire, zero line and ground wire are carried out winding displacement and the conductor of said holding wire, zero line and ground wire is arranged in a row; (A5) metal layer covers is formed total screen on said holding wire, zero line and ground wire, wherein said total screen is an aluminium foil layer; (A6) make said total screen and said holding wire, zero line and ground wire fit through the vacuum calendering, thereby process high-frequency high-speed data transmission cable 33.The preferably comprises that also step (A7) is coated on said total screen with insulation film and forms insulating thin layer outward, and makes said insulating thin layer and said total screen fit through the vacuum calendering, and wherein said insulating thin layer is a laminated polyester film.
Continuation is with reference to figure 5, and step (S2) specifically may further comprise the steps: two circuit boards (B1) are provided, the conductor at said high-frequency high-speed data transmission cable two ends is welded with two circuit boards respectively; (B2) outside two said circuit boards respectively the injection moulding insulation crust form two connectors.
With reference to figure 4-Fig. 7; Describe the concrete structure of the high-frequency high-speed data connector 300 that high-frequency high-speed data connector manufacturing approach of the present invention produces: said high-frequency high-speed data connector 300 comprises high-frequency high-speed data transmission cable 33 and is connected the connector at said high-frequency high-speed data transmission cable 33 two ends; Said connector comprises circuit board 31 and the insulation crust 32 of said circuit board 31 is installed; During use, only need the connector at high-frequency high-speed data transmission cable 33 two ends be inserted corresponding external apparatus interface respectively and get final product.
With reference to figure 6; Said high-frequency high-speed data transmission cable 33 comprises ground wire 23, holding wire 21, zero line 22 and total screen 24; Said holding wire 21 comprises conductor 201 and the insulating barrier 202 that coats said conductor; Said zero line 22 comprises conductor 201 and the insulating barrier 202 that coats said conductor 201; Said ground wire 23 is made up of conductor 201, and said holding wire 21, zero line 22 and ground wire 23 are arranged in a row, and the conductor 201 of said holding wire 21, zero line 22 and ground wire 23 is arranged in a row; Said total screen 24 coats said holding wire 21, zero line 22 and ground wire 23 and fits with holding wire 21, zero line 22 and ground wire 23, and said total screen 24 is coated with insulating thin layer 25.Wherein, Said holding wire 21 is four; Be respectively holding wire 211,212,213,214, whenever the conductor 201 with holding wire 21 is two, and four holding wire 211,212,213,214 symmetric arrays are in said zero line 22 both sides; Holding wire 211,212 is arranged side by side in zero line 22 left sides like this, and holding wire 213,214 is arranged side by side in zero line 22 right sides.Said zero line 22 is one, and the conductor 201 of said zero line 22 is four, and said zero line 22 is arranged in the central authorities of said high-frequency high-speed data transmission cable 33.Said ground wire 23 is two, and two ground wires 23 are the outermost both sides of symmetric arrays at said high-frequency high-speed data transmission cable 33, and holding wire 21 has been played better shielding action, prevent the interference of outer bound pair holding wire 21 and the interference between the holding wire 21.
With reference to figure 7; The some conveying terminals 312 that link to each other with external interface that are formed with of one end of said circuit board 31; The splicing ear 311 that other end conductor some and high-frequency high-speed data transmission cable 33 welds; Some said splicing ears 311 are evenly distributed on the both sides up and down of said circuit board 31, and said high-frequency high-speed data transmission cable 33 has two and parallel arranged, the conductor 201 of two said high-frequency high-speed data transmission cables 33 and the splicing ear 311 corresponding connections of both sides up and down.Particularly; Circuit board 31 every sides have 18 splicing ears 311; 18 splicing ears 311 are divided into four zero terminals that link to each other with the conductor 201 of zero line 22,2, four data terminal that link to each other with the conductor 201 of holding wire 21 of two earth terminals that link to each other with the conductor 201 of ground wire 23 and four dead end; When high-frequency high-speed data transmission cable 100 is welded with circuit board 31; Earlier that 14 conductors in the high-frequency high-speed data transmission cable 100 201 are relative with corresponding splicing ear 311 positions, re-use the welding equipment welding.
With reference to figure 5a-Fig. 5 c; With high-frequency high-speed data transmission cable 33 14 conductors 201 be welded on splicing ear 311 before; Need high-frequency high-speed data transmission cable 33 is carried out preliminary treatment, specifically may further comprise the steps: cut said high-frequency high-speed data transmission cable 33 and make it reach predetermined length (with reference to figure 5a); Divest total screen 24 at said high-frequency high-speed data transmission cable 33 two ends, make holding wire 211,212,213 and 214, zero line 22 and the ground wire 23 at said high-frequency high-speed data transmission cable 33 two ends expose (with reference to figure 5b); Melt the insulating barrier 202 at high-frequency high-speed data transmission cable 33 two ends that divested total screen 24, make that the conductor 201 at said high-frequency high-speed data transmission cable 33 two ends is exposed.Wherein, use cutting machine to cut said high-frequency high-speed data transmission cable 33, use disposable total screen 24, the use laser thawing insulating barrier 202 peeled off of peeling machine.
Compared with prior art; Because the high-frequency high-speed data transmission cable 33 of manufacturing of the present invention has been removed the earthing conductor in the classical signals line, and adopt conductor 201, and fit 3 with ground wire 23 through total screen 24 as ground wire 23; Make and be electrically connected between ground wire 23 and the total screen 24; And holding wire 21 wraps up by the total screen that links to each other with ground wire 23 with zero line 22, prevents the interference of outer bound pair holding wire 21 and the interference between the holding wire 21, and shield effectiveness is good; On the other hand; The present invention has reduced conductor 201 total numbers in the cable through the earthing conductor of having removed in the holding wire 21; Solved because the link subnumber owing to circuit board must be with the problem of earthing conductor kneading welding adjacent in the cable less than the conductor number of cable among traditional Mini SAS; Make when the present invention is welded on high-frequency high-speed data transmission cable 33 on the connector; Reduced traditional operations such as wire harness, wrap insulate braid and interface pressing of tying up, manufacturing process is few, and production efficiency is high.
Related material and the parameter of high-frequency high-speed data connector manufacturing approach of the present invention all decided according to actual conditions, for well known to those of ordinary skill in the art, no longer does detailed explanation at this.
The above disclosed the preferred embodiments of the present invention that are merely can not limit the present invention's interest field certainly with this, so according to the equivalent variations that claim of the present invention is done, still belong to the scope that the present invention is contained.
Claims (10)
1. a high-frequency high-speed data connector manufacturing approach may further comprise the steps: (1) manufacturing high-frequency high-speed data transmission cable; (2) two connectors are provided, the two ends of high-frequency high-speed data transmission cable are welded on respectively on the two said connectors; It is characterized in that step (1) specifically may further comprise the steps:
(A1) extrusion molding one layer insulating forms holding wire on conductor;
(A2) extrusion molding one layer insulating forms zero line on conductor;
(A3) provide conductor to form ground wire;
(A4) said holding wire, zero line and ground wire are carried out winding displacement and the conductor of said holding wire, zero line and ground wire is arranged in a row;
(A5) metal layer covers is formed total screen on said holding wire, zero line and ground wire;
(A6) make said total screen and said holding wire, zero line and ground wire fit through the vacuum calendering.
2. high-frequency high-speed data connector manufacturing approach as claimed in claim 1 is characterized in that, step (2) specifically may further comprise the steps:
(B1) two circuit boards are provided, the conductor at said high-frequency high-speed data transmission cable two ends is welded with two circuit boards respectively;
(B2) outside two said circuit boards respectively the injection moulding insulation crust form two connectors.
3. high-frequency high-speed data connector manufacturing approach as claimed in claim 2; It is characterized in that; One end of said circuit board is formed with some conveying terminals that link to each other with external interface; The other end is formed with the splicing ear of the conductor welding of some and high-frequency high-speed data transmission cable, and some said splicing ears are evenly distributed on the upper side and the downside of said circuit board, and two said high-frequency high-speed data transmission cables weld with the splicing ear of upper side and downside respectively.
4. high-frequency high-speed data connector manufacturing approach as claimed in claim 1 is characterized in that, and is before the two ends with the high-frequency high-speed data transmission cable are welded on two said connectors respectively, further comprising the steps of:
(C1) the said high-frequency high-speed data transmission cable of cutting makes it reach predetermined length;
(C2) divest total screen at said high-frequency high-speed data transmission cable two ends;
(C3) thawing has divested the insulating barrier at the high-frequency high-speed data transmission cable two ends of total screen.
5. high-frequency high-speed data connector manufacturing approach as claimed in claim 1; It is characterized in that; Need that extrusion molding one layer insulating forms holding wire on four conductors that are arranged in a row in the step (A1), said holding wire is four, and what four said holding wires were symmetry is arranged in said zero line both sides.
6. high-frequency high-speed data connector manufacturing approach as claimed in claim 1; It is characterized in that; Need that extrusion molding one layer insulating forms zero line on four conductors that are arranged in a row in the step (A2), said zero line is one and is arranged in the central authorities of said high-frequency high-speed data transmission cable.
7. high-frequency high-speed data connector manufacturing approach as claimed in claim 1 is characterized in that, the ground wire that forms in the step (A3) is two, and two said ground wires are the outermost both sides that are arranged in said high-frequency high-speed data transmission cable of symmetry.
8. high-frequency high-speed data connector manufacturing approach as claimed in claim 1; It is characterized in that; Step (1) also comprises step (A7): insulation film is coated on said total screen forms insulating thin layer outward, and make said insulating thin layer and said total screen fit through the vacuum calendering.
9. high-frequency high-speed data connector manufacturing approach as claimed in claim 8 is characterized in that said insulating thin layer is a laminated polyester film.
10. high-frequency high-speed data connector manufacturing approach as claimed in claim 1 is characterized in that said total screen is an aluminium foil layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110177558 CN102306892B (en) | 2011-06-28 | 2011-06-28 | Manufacturing method for high-frequency high-speed data connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110177558 CN102306892B (en) | 2011-06-28 | 2011-06-28 | Manufacturing method for high-frequency high-speed data connector |
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| CN102306892A true CN102306892A (en) | 2012-01-04 |
| CN102306892B CN102306892B (en) | 2013-10-30 |
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| CN 201110177558 Active CN102306892B (en) | 2011-06-28 | 2011-06-28 | Manufacturing method for high-frequency high-speed data connector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700448A (en) * | 2013-12-25 | 2014-04-02 | 镇江市华银仪表电器有限公司 | Manufacture method for elastic power cord |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308421A (en) * | 1978-01-18 | 1981-12-29 | Virginia Plastics Company | EMF Controlled multi-conductor cable |
| JP2001351443A (en) * | 2000-06-07 | 2001-12-21 | Nec Corp | Flat cable with shield |
| TW201108257A (en) * | 2009-06-19 | 2011-03-01 | 3M Innovative Properties Co | Shielded electrical cable |
-
2011
- 2011-06-28 CN CN 201110177558 patent/CN102306892B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308421A (en) * | 1978-01-18 | 1981-12-29 | Virginia Plastics Company | EMF Controlled multi-conductor cable |
| JP2001351443A (en) * | 2000-06-07 | 2001-12-21 | Nec Corp | Flat cable with shield |
| TW201108257A (en) * | 2009-06-19 | 2011-03-01 | 3M Innovative Properties Co | Shielded electrical cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700448A (en) * | 2013-12-25 | 2014-04-02 | 镇江市华银仪表电器有限公司 | Manufacture method for elastic power cord |
| CN103700448B (en) * | 2013-12-25 | 2016-05-25 | 镇江市华银仪表电器有限公司 | A kind of preparation method of telescopic power line |
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| CN102306892B (en) | 2013-10-30 |
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Effective date of registration: 20200717 Address after: Baoan District Xin'an street Shenzhen city Guangdong province 518100 Liuxian road two 1 11 storey factory COFCO Powerise Patentee after: SHENZHEN CHOSEAL INDUSTRIAL Co.,Ltd. Address before: 516000, Guangdong, Huizhou province Boluo County town of dragon Creek nest management area in front of the field Patentee before: HUIZHOU CHOSEAL INDUSTRIAL Co.,Ltd. |