国产强奷女交警在线播放_日韩亚洲?V人人夜夜澡人人爽_精品在线国产一区二区三区_人妻无码aⅴ中文字幕_一级@片免费观看_欧美日韩综合一区二区_丁香五月婷婷五月天_波多野结衣潮喷无码中文_国产亚洲AV片在线观看播放按摩_国产成人精品怡红院

Material strength: Hardware molds need to withstand significant impact and pressure during use, so it is necessary to choose materials with higher strength. The high strength of the material can ensure the stability and service life of the mold.
Wear resistance of materials: Hardware molds will frequently come into contact with metal parts during use, so it is necessary to choose materials with good wear resistance. The material has good wear resistance, which can reduce the wear of the mold and extend its service life.
Thermal conductivity of materials: Hardware molds generate a large amount of heat during use, so it is necessary to choose materials with good thermal conductivity. The material has good thermal conductivity and can effectively dissipate the heat inside the mold, avoiding mold deformation or cracking.
Corrosion resistance of materials: Hardware molds may come into contact with some corrosive media during use, so it is necessary to choose materials with good corrosion resistance. The material has good corrosion resistance, which can ensure the surface quality and accuracy of the mold.