Wenzhou Zhengling machinery CO., LTD is an enterprise specialized in production of petroleum machinery equipment, core parts of greaser, gas-oil separation pump, vane pump, gas-oil separator, automatic nozzle, emergency shutoff valve, sight oil indicator, filter, hose connector and all sorts of ball valves etc. It located in the Wenzhou Dong’ou Industrial District, which has a reputation of “Pudong of Wenzhou”.