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