... China injection mould factory made plastic precision part blacked for electronic product About us Established in 2005, zhuhai jzs ... ,718,S136,8407,NAK80,SKD61,H13Hardness of steel46~56HRCMaterial for Slider ,Lifter and all sub insert use1.2767 HRCCavitySingle ... DVD boxes, head lamps & tail lamps housings & radiators grilles for cars, notebook housings, printer & ink cartridges, LCD light panel sets ...