|Keystone company was established in 1951, since then we have developed many butterfly valve styles designed to suit various applications and industries. When it comes to Butterfly Valves, Keystone is a household name.
In the year 1998 Keystone China branch was established, Keystone China's main business is to produce the valves and sell in China mainland, in the coming two years we take big China mainland market, Keystone becomes a famous brand in China. In the year 2001 we expanded Keystone China, we also produce C.S flange and C.S fitting. From the year 2004 the international business came hot, Keystone China export business has been developing fast, our mainly market is Italy, France, Turkey , Spain ,Germany ,Iran ,Iraq , Bangladesh, Indonesia , Brazil etc.