YUHUAN Dazhong Copper Industry Co., Ltd. is located in Yuhuan of China. Since inception in 1997, we have specialized in manufacturing and supplying a wide range of valves & pipe fittings applied in such industries as oil & gas, chemical, petrochemical, food, beverage and refinery.OUR plant is comprised of machine lines, assembly lines and quality control & verification and customer service departments. Well-trained and experienced technicians guarantee the precision and optimize work efficiency to provide timely delivery, the best quality and competitive price for clients.WE have ZZ and MD brands. The Square Ball Valves won the Golden Prize of International Invention in 2000. More than ten kinds of Chinese invention patents. Since 2008 become Chinese Quality Prestige-AAA Company.FOR further approval of our product quality, our plant has got ISO9001:2000 and GB/T19001-2008 certifications. WE are definitely your fast and reliable access to the ever-changing world markets. [Details]