(1) Have two manufactories to produce excavator parts. (2) Passed ISO: 9001-2000 . (3)Wax and send casting . Excavator partsCATERPILLAR E200B, E312, E315, E320 ... EX55, EX60, EX70, EX100, EX200, EX210, EX240, EX300, EX330, EX450.HYUNDAI R210, R220-7,R290, R400, R450,KOBELCO SK200, SK230, SK330 ...