Our company ( Shanghai ROPO Automation control system Co.,Ltd ) professionally manufactures penumatic actuators , ball valves, butterfly valves. gate valve .etc., and our products are widely used in the fields such as oil, petrochemical, gas, metallurgy,electric plant, paper making.etc. As a big-sized manufacturer , we enjoy good reputation in Chinese industry of actuators & valves , our products are up to some international standard,and are also exported to overseas markets ( including North America , Europe , middle east & South east asia.etc). Every year ,We participate the exhibition held in Canada & Germanny . We hope for good business with you if you would like to import goods from China or work as sales agent of Chinese manufacturer .