- Seehwa Heavy Industry Co., Ltd.
- Address:3 ba-120ho,Seehwa Industrial complex, Jeongwang-dong ,Siheung-si
- Dhesung Precision & Industries Co.,Ltd
- Address:969,Jangdeok-dong ,Gwangsan-gu
- MECCA INDUSTRY CO
- Address:2Ba-708 Sihwa Industrial Complex
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