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Qingdao O.B.T Co., Ltd.
Hangzhou Ravine Trade Co., Ltd
Kanaif Group (Shanxi) Pipeline System Co., Ltd
CYUN HONG Enterprise Co., Ltd
Shanxi Zhongwei Flange Co., Ltd
Hunan Victor Petrotech Service Co.,Ltd
Yiwu Jinchuang Imp.&Exp. Co., Ltd.
Yuhuan Yuankun Valve Co.,Ltd.
Shenyang Zhongye Seals Factory
Wenzhou Huaqi Trade Co.,Ltd
Dingxiang Chengshuang Flange Co., Ltd.