Dongying Wahsen Metal Products Co.,Ltd Shandong China specializes in manufacturing Pump body,Valve parts,Auto parts,Marine hardware in material stainless steel,alloy steel and carbon steel for many years.The products development period is about 4-8 weeks.And we have already passed ISO9001:2000 quality system certificates. The products' rejected rate is less than 0.03 percent. Welcome to our company to negionate business.