- King Cheng Spring Co., Ltd.
- Address:No.58, Wu-Chuan 7th Road, New Taipei City Wu-Ku Dist. 24890 Taiwan
- Tech Spring Manufacturing Corp.
- Address:No.9, Lane 721, ChungCheng Rd, Sinjhuang Dist, New Taipei City, Taiwan R.O.C New Taipei City Taiwan R.O.C 24261 Taiwan
- Sunswin Equipment Inc.
- Address:No. 5, Alley 7, Lane 24, Daxing Street Taipei Taiwan
- LYANG JENG INDUSTRY
- Address:Da-xing East Dist, Taichung Taiwan Taiwan
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