- Qingdao Youyuan Metallurgy Material Limited Company
- Address:Room No. 2-602, No.12 Donghai Middle Road Qingdao Shandong China
- Ying Hui International Trade Co.,Ltd
- Address:Room 1507 ,No.90,LuXun Street,Zhongshan District,Dalian,LiaoNing Dalian Liaoning 116034 China