engine parts piston ring 1.nodular iron, iron, alloy 2.polishing, plating, oxidation 3.good surface treatment 4. OEM SERVICE Engine parts piston ring 350mmRemark: 1.Good quality,good packing,good finish 2.Competitive price 3.Diameter:350mm 4.Professional service5.For European& American, Korean & Japanese etc. 6.Secure serviceProducts from Dalian Jiajia Shipping Technology Co., Ltd. Co., Ltd are ...