Quanzhou Mingqiao Machine Accessory Co.,Ltd is a member of internal-combustion engine association of China. And we have succeed in field of producing engine fitting for almost twenty years. According to the JB/T9769-1999 standard, we professionally produce alloy valve seat washers with high attrition endurance, high temperature endurance, high concussion endurance and high erosion. According to the GB223 standard, we also professionally produce valve pipes with high attrition endurance, high temperature endurance, high erosion endurance. And we can produce the fittings with other different sizes from customers.