Valve casting industry. Valve casting industry is the traditional industries Longwan District, one of more than 100 existing enterprises, mainly in Yao Town, sand towns and Yongxing streets, last year the entire industry output value of more than 800 million yuan. Its raw materials are mostly scrap iron and steel and fasteners, hardware, equipment and other materials processing waste angle, using lost foam casting, lost wax casting and sand casting Resin technology to produce all kinds of pipes, valves, in addition to the domestic market, , has entered Japan, the United States, Southeast Asia and other markets. Casting products market due to large capacity, the product sell better development of the industry in good shape.

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