- Wecoochem Co., Ltd.
- Address:707 Lianmeng Road, Xinhua District,Shijiazhuang City Hebei Province, P.R.China
- 87
- Address:HENAN BUILDING, NO.90, JAFFE ROAD, WANCHAI, HONGKONG
- Keysyn Co., Ltd
- Address:No 10A Sassoon Road, Pokfulam Hong Kong
- 144 PB
- Address:Office 3/9, 49F, Langham Place Tower, 8-Argyle Street
- Usteroids Trading Co., Ltd
- Address:No 518 Tianhe North Road
- Suzhou Protrust Chemachy Co., Ltd
- Address:5F, No. 208 Jiyang Road (M), Zhangjiagang City, Jiangsu Province, China
- HongKong YuanCheng Tech Deve Co., Limited
- Address:8/F,Cnt Commercial Building, 302 Queen's Road Central
- Reekom Co., Ltd.
- Address:Unit D,10/F, China Overseas Building,139 Hennessy Road,
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