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Material adopt China GB Standard
GB/T2521-2008
Cold-rolled grain-oriented and non-oriented electrical steel strip(sheet)
(Q/WG(GG)05-2012)
Copper alloy plate
GB/T2040-2008
Wrought aluminum and aluminum alloy chemical composition
GB/T3190-2008
Steels for cold heading and cold extruding
GB/T6478-2008

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