- Shandong Donghai Steel Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Wuxi Hengtong Welding Machinery Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin Pengjin Steel Pipe Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin Aokai Oil Tools Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tangshan Fengrun Shengda Steel Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Foshan Nanhai Sanon Metal Products Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin Yuantai Industrial Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- TRIDENT STEEL & ENGG. CO.
- Main business:
- Caribbean RegionBermuda
- Hengshui Yitong Metal Products Co., Ltd
- Main business:
- Caribbean RegionBermuda
- Santa Pipe Industry (Dalian) Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shanghai Xinxing Twin Screw Machinery Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Taizhou Huangyan New Vision Industry & Trading Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Foshan Jinsuiying Stainless Steel Material Limited Company
- Main business:
- Caribbean RegionBermuda
- Wuxi Xinguo Sales Of Steel Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Foshan City Nanhai Xinyu Metal Products Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- al amin for pipes and industries
- Main business:
- North AfricaEgypt
- Hejian Yinggang Plastic Products Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin Shangyi Metal Structure Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Huzhou Delai Machinery Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shenzhen Kanglibang Science & Technology Co., Ltd.
- Main business:
- Caribbean RegionBermuda