- EJ Carbide Co., Ltd
- Address:right way tower, Mong Kok Road Kowloon, Hongkong
- Sam Wo Polishing Material (Guangdong) Co., Ltd.
- Address:3#, Yuanlin Road, Taihe, Qingxin County, Qingyuan City, Guangdong Province, China Qingyuan Guangdong 511800 Hong Kong
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