- Hebei Tuohua Metal Products Co.,Ltd
- Address:No.2 of Meidong International building,Guangan street,Shijiazhuang city,Hebei province Shijiazhuang Hebei 050011 China
- Luoyang Gongyan Technology Co.,Ltd
- Address:Taikang Road, Wangcheng Avenue, Luoyang city,Henan province, China Luoyang Henan 471023 China