... Hours guarantee 5.ISO9001:2008 1.Product Specification Material50MnQualityHeat-treated,HRC53-58ColorYellow or BlackTechniqueForging/CastingFinishingSmoothCertificateISO9002MOQ5 ... D8K 4) Daewoo: DH220, DH280, R200, R210. 5) Kato: HD250, HD400 (HD450), HD500, HD550, HD700 6) Kobelco: ... SE 280Mutual Benefit is Our pursuit Komatsu Hitachi Kato Kobelco Sumitomo Hyundai Daewoo track roller bottom roller ...