Tonglu Wanhe Valves Product Co., Ltd. is an old manufacturer specialized in manufacturing cast iron and cast steel gate valve, ball vavle,stop valve and check valve with annual output of 7,000T. We has been taking cast iron valve as leading products since we established in 1994,and began to produce cast steel valve from year 2000.We can afford valves complied with ANSI,JIS ,DIN and GB standard as well as customer-tailored order.