1.first-class and famous 2.3,000 tons per month 3.ISO9001& ISO14001& GB/T28001 4.coating:zinc 5.Smooth without burr Our Galvanized technology has became first-class and famous in domestic and international market. Presently, our Hot Dip Galvanizing capacity is 6,000 tons per month, and 72,000 tons per year. Tianjin Zhongyide Iron Tower Manufacture Co,Ltd, which was established in 1990, is a ...