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上海元销紧固件有限公司
Shanghai Yuanxiao Fastener Co., Ltd.
上海元销紧固件有限公司
(GB /T 833 - 1988)
material Carbon steel
grade, rigidity grade 4.8
Coating electroplating
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Shanghai Yuanxiao Fastener Co., Ltd. Phone：0512-53426651 
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