Yangzhou Chengde Steel Pipe Co., Ltd,29,2,C171,
Hubei Xinyegang Special Tube Co., Ltd,54,9,C172,
Yangzhou Lontrin Steel Tube Co., Ltd,39,9,C173,
Hengyang Valin MPM Co., Ltd,48,2,C174,
Zhejiang Gross Seamless Steel Tube Co., Ltd,41,4,C204,
Companies listed in the Annex,45,6,C998,
All other producers,54,9,C999,