High speed steel hooks-·High carbon high vanadium HSS is used,High concentration of vanadium carbide hard addition,more wear-resistant.

                                       ·With the deep cryogenic treatment,it obtained dispersion strengthing,

                                        and lead to wear resistance improve on.

                                       ·Adopt double face grinding simultaneously，it has the advantages of being stressed uniformly,

                                        to make sure the hook's both side is parallel.

                                       ·The package is adopted gas phase anticorrosive paper,rust protection is more thorough and lasts longer.