- Qinhuangdao Guoyang Steel Co. Ltd
- Address:South of Liujiaying, Lulong County Qinghuangdao Hebei China
- Traust Co., Ltd.
- Address:Suite 401, No. 2 Rd, Beijin Village, Nanguo Olympic Garden
- Tangshan Yunfeng Industrial Trade Co.,Ltd.
- Address:No.18,Yongchang steel District,Tangshan,China Tangshan Hebei China
- Jiangyin Huashi Metal Making Fac.
- Address:Huaxi, Jiangyin, Jiangsu, China
- HZCX Mould Steel Co., Ltd
- Address:ROOM 1006, TOWER B, TWINS TOWER COMMERCIAL MANSION, Huizhou, GuangDong, China
- Hebei Zhanming Carbon Products Co., Ltd.
- Address:No.2 Youyi Road, High Tech Industrial Development Zone.
- Xun Ni
- Address:NO 168 street of GuangPing ,qiaoxi,Shijiazhuang ,China Shijiazhuang Hebei 050091 China
- Hua Xing Long Mould Steel Co.,Ltd
- Address:HengDong Industrial Zone,Xiang Xin East Road,Yan Tian,Dong Guan emai,sallyzheng78 at gmail dot com Dongguan Guangdong 523690 China
- Beijing Longqingtaifa Com.
- Address:shijingshan street Beijing Beijing China
- Tiancheng Import And Export Co., Ltd.
- Address:ZHANQIAN STREET, Anshan, Liaoning, China
- Tianjin Dingchengli International Trading Co., Ltd/Tianjin Hengji Steel Co., Ltd
- Address:NO.1 HENGTAI ROAD DAQIUZHUANGTOWN JINGHAI COUNTY
- Langfang Kunfeng Steel Co.Ltd
- Address:Anci district Matou town south of qiuzhuang
- Ningbo Heyue Recycling Metal Co.,
- Address:Ningbo, Zhejiang, China
- Qingdao Steel Pipe Co.,Ltd
- Address:5# zhuji road Yantai Shandong 264000 China
- Taiyuan Corrugated Plastic Pipe Industry Co., Ltd.
- Address:Room No.503, Zhangzhuang No.198, Zhengbian Road, Zhengzhou Zhengzhou Henan 450000 China
- Grand Faith Steel Company
- Address:kaipin district tangshan city Tangshan Hebei 063000 China
- Meidong Metal Products Co., Ltd.
- Address:727HEPING RD HENGSHUI Hebei China
- Zhangjiagang Renhe High-precision Steel Tube Co.Ltd
- Address:Nansha Bailin Industrial Zone, Jingang Town, Zhangjiagang City Suzhou Jiangsu China
- Beijing Zhongyou TIPO Material & Equipment Co., Ltd.
- Address:Room.1138E, North Tower, Zhuangsheng Plaza, No.6, XuanWuMen Wai Street, XuanWu District, Beijing Beijing Beijing 100052 China
- CHINTONE STEEL INDUSTRIAL CO., LTD.
- Address:Dalang town, Dongguan, Guangdong, China