... fatigue life, high wearing resistant and high strength propertie 1.Engine timing chain 2.material: 40Mn3.Wearable,low noise,heat-resistant 4 ... .30000km 5.OEM offered Why choose us: 1.TAIAN DONGZUN CHAIN SPROCKET MANUFACTURING CO.,LTD established in 2009, we have12 subsidiaries ... chains, conveyor chains, dragging chains, agricultural chains and so on; Engine timing chain