Stamping(冲压）

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Attachment for you ref...
1 L' C% T3 M' t  m1 m: \  Z! h# H0 wSome introduction books about sheetmetal stamping...

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Stamping 冲压
Attachment for you ref...附件供您参考
7 I% [; r. }4 ~: }& B* JSome introduction books about sheetmetal stamping...一些关于钣金冲压入门书籍

wwft_79

my god
* b$ i% e( k' \( `oh my god
! h6 I& C1 t4 E, h7 Myou are not a man yet
2 ^; M9 h- E) {you're one god already.
) ~+ ?+ `; l" x1 V: y, @8 d  I) Tthank you very much.