Stamping(冲压）

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Attachment for you ref...
* J) _5 T& B/ u8 w2 j5 {4 `8 `, zSome introduction books about sheetmetal stamping...

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Stamping 冲压
Attachment for you ref...附件供您参考
; }6 ]  U$ a' F+ ~Some introduction books about sheetmetal stamping...一些关于钣金冲压入门书籍

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my god
* l. `; e3 s9 h$ _' `$ }oh my god
( O( U' _9 D; X# Cyou are not a man yet
( c2 W" P# M" d8 W  `8 M0 c4 syou're one god already.
4 X; i: ]& \( jthank you very much.