... company specializing in the production and selling of square, round, rectangular pipe surfaced with galvanized coating, polish, black ... we have always adhered to the business policy as "Quality for Survival, Product for Development, Credibility for Cooperation and ... have cooperated with Bao steel, Wu yang steel, TPCO, Baotou steel, Shou gang Jin tang Steel, An gang Steel, Daye Steel, HBIS and other ...