Hangzhou Yanshan Import & Export Trade Co., ltd is registered in Hangzhou, which has the independent import&export license, specialized in manufacturing and exporting instruments. Our company can also arrange the  producing in different kinds of instruments, meanwhile, with special technology request meter products. we have abundant of the process experience. For the quality of our products, we have professional control process and strict management system.. Our factory is invested in Dongtai Jiangsu named Yanshan Meter Genenral Factory. It has fixed assests of more than 80 million yuan and covers an area of 30000m�The factory includes five branches dozens of products: oval wheel flow meter,glass rotor flow meter and constant flow pump, Rotor flow meter, Spiral Rotor meter, Rotary piston flow meter. All the products have passed ISO9001 international quality management system authentication.