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quanzhou kaiyusi machinery manufacture Co.,ltd, is professional manufacturer of undercarriage parts, which used for excavator and bulldozer ,loader .Our main product are track roller ,from idler ,sprocket ,carrier roller ,bucket bush , tooth pin ,link bushing ,track bolt ,and swearing bearing ,track adjuster.these parts are used for brands like komatsu ,caterpillar ,hitachi, kato, sumitomo,kobelco, daewoo, hyundai,volvo,yanmar yuchai ,SWE etc,The heat treatment of our products adopts the latest German machine to strictly control and confirm the quality of the products after processing, so that every customer can rest assuredPurchase advanced producing and inspect machines ,produce strictly according to the standards of national and industry ,we make our effort to execute the management model of modern enterprise.we have passed the SGS:ISO9001:2008 certificate,We export to all over the world, the Middle East, Europe, America, Japan, Korea, Russia and other Central Asian countries .we have won the great reputation in market under the high grad service and productions , sales network has spread all over the domestic and oversea markets.