... machinery Co., Ltd is a professional manufacturer of cutting edge and end bit for all brands of construction machinery, It cooperaes with a ... products. We specialized in manufacturing various cutting edge for all brands of Motor grader, Bulldozers,Excavator,Loader and Scraper.A) Part No ... Boron steelC) Hardness: HB300~350 or HB380~450 D) For brands: Komatsu, ESCO, Fiat, Hyundai, Case, Sany etc.E) OEM: ...