1. Supplier of Weatherford, CNPC and SINOPEC 2. Self-owned brand, factory and patent 3. API Q1 & ISO9001:2008 certificated Production Description Rich and high quality local bauxite as raw material.More than 10 years' experience in oil & energy Industry.High quality products, first-class service, and most competitive price.Top supplier of SINOPEC, CNPC and other US companies famous for oil and ...