- Kong Jin
- Internal Safety Handle,Internal Hinge,Magnet Catch,Stay,Disk Lock.
- Address:429-2 Dangjeong-dong,Dangjeong-dong ,Gunpo-si
- 3G Technology Co., Ltd.
- Handle,Lift Sliding System,3G Roller,Stay (Hinge).
- Address:410-1, SSANGJUNG-RI, MAENGDONG-MYUN, UMSUNG-GUN
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