ADDRESS:North China Petroleum No. 1 Plant, Qingxian County, Hebei Province | BUSINESS SCOPE: | Coating, technical services and sales of drill pipes, tubing, casing, pipelines, pipe fittings and petroleum equipment, as well as processing and sales of hardbands, welding materials, and coatings. | E-MAIL: | hujianxiu@cnpc.com.cn;bowmanun@126.com;huabeituceng@126.com
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