... etc. 3.ISO9002,QS9000,TS16949 Piston Ringpiston ring for Komatsu 6D105 engine:1.piston ring material :nodular iron, cast iron ... and low price2)Honest service3)OEM service was offered4)For Middle East(European& American, Korean & Japanese etc5) ... MOQ was 100 sets6)We can develop new items for you especially.Any questions, please contact us soon, ... in any way we can! Piston ring for Komatsu 6D105 engine