motorcycle shock absorber parts--piston, base valve, pistion rod guide , are our mainly products exported. Our factory, Ningbo Kingbell Powder Metallurgy Co., Ltd ... We have the certificate ISO/TS16949 in Jun. 2008. We have exported our products to US, Korea, Germany, Iran, and so ... .Please let me know if you are interested in our products.Thank you and best regards,Mary motorcycle shock absorber parts