... HYUNDAI auto for 6 years 2.shaping mould: plastic injection mould,1083 plastic molds we had made in all kinds of tool ... system, accelerate ejector, hydraulic cylinder structure, gas assisted molding, screw core molding,over mold,multi-colours mold.etcNormal mould steel Steel ... .208348-52HRC420H1.231632-34HRCP41.234195-100HRCD21.237956-60HRCBeCu40-42HRC plastic injection molding process moulds machinery