- Hunan Standard Steel Co., Ltd
- Manufacturer & Exporter of Carbon Steel Pipe, Stainless Steel Pipe, Mechanical Structural Sections, Fittings and OCTG in various Materials
AsiaChina
- Hengshui Yitong Pipe Industry Co.,Ltd.
- Corrugated Metal Culvert, Corrugated Steel Pipe Culvert
AsiaChina
- Winsteel Group Co.,Ltd
- API 5L, ISO 9001, ISO 14001, OHSAS 18001, PED, CPR
AsiaChina