Valve in the oil, gas, coal and ore mining, refining, processing and pipeline systems; in chemical products, pharmaceutical and food production species; hydropower, thermal power and nuclear power production system; in urban and industrial enterprises to drainage, heating, and gas supply systems; in farmland irrigation and drainage systems; in metallurgy production system can be widely used, is a construction and production, national defense and people's lives, the importance of mechanical products. Valve closed piping system in various types of media used to cut off or connected to flow, so that the media in accordance with a predetermined range 
 Valve Manufacturing Co., Ltd. Linyi on the industry, free :400 -6999-972 National Recruitment agency vacancies in some cities 
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