... iron,steel,alloy,and etc(we can do as customer's request)5)surface treatment:polishing,plating,oxidation,phosphating,and etc ... you.11)We sell piston , piston ring and cylinder liner's Diameter from 68 mm to 160 mm WE COULD SUPPLY ... , KAMAZ , MTZ,STEYR , HOWO , UTB , ZETOR(3)American Vehicle Type:CAT , CATERPILLAR , CASE INTERNATIONAL,CUMMINS , INTERNATIONAL , FORD , LISTER , VOLVO(4)Japanese ...