Zhengzhou Free Fluid Control Technology Co.,Ltd is leader in the design valve and application of special industrial valves , we provide high quality industrial products for our customers all the time. First introduced ceramic engineer valve in the year ***8, FREE-VALVE have steadily proven their worth in tough industrial applications once thought to be solely the province of steel or ceramic valves. Today, as challenge traditional thinking in abrasive fluid applications, FREE-VALVES offer a wide rang of products:ceramic knife gate valve , ceramic double gate valve , ceramic rotary gate valve , slurry valve ,tank bottom angle valve , V type ball valve, ball valve, butterfly valve,ceramic tile lined composite pipes etc . They have a wide application in coal washing plant ,coal power plant ,alumina refinery, steel plant,chemical etc. Our valves have been exported to Vietnam , Pakistan , Turkey , Malaysia, United states ,Indonesia,Taiwan,Chile ,Mexico ,Thailand etc .