sintered metal structure parts, such as auto parts, gears, hardware parts, garden tools parts, sewing machine parts, and so on Our factory, Ningbo Kingbell Powder Metallurgy Co., Ltd., has specialized in manufacturing the powder metallurgy structure components for 21 years. We have exported our products to US, Korea, Germany, Iran, and so on.On Jun.6,2008, we have the certificate ISO/TS16949. ...