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Yantai Yunsheng Petroleum Machine Accessories C...
Yantai Yunsheng Petroleum Machine Accessories Co. Ltd., founded in 2005, is a professional manufacturer of API Spec 11B Sucker Rod Couplings, including Spray Metal coupling, class T Sub OD with various type Full size, Slim Hole, Over Size, Big Chamfer, Wrench Flat, Bidirectional Cambered ...
Telephone:86-1505-3559530Address:shengquan, yantai, Shandong, China
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