... decoration, corrosion resistance etc.Tianjin Haoyou Industry Trade Co., Ltd.,Tianjin Haoyou Industry Trade Co., Ltd., founded in 1993, ... metal material trade, chain store for mechanical & electrical products, international trade, ore business, automobile sale (including imported ... SEAMLESS PIPE, etc.*Mainland - Manganese ore and chemical products, like malefic anhydride, rubber process oil, naphtha and ...