에 의해서 ep | 4월 13, 2023 | Uncategorized
Solution Description Solution DescriptionMajor Resources:one)housing:aluminium alloy ADC12(size 571-090) die forged iron HT200(size a hundred and ten-one hundred fifty)two)Worm:20Cr, ZI Involute profile carbonize&quencher heat therapy make equipment floor...