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Shanghai Shangdian Washer Co.,Ltd.
上海上垫垫圈有限公司
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14 Years
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Washers
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Square washers
High-strength washers
Lock washers
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(DIN 6904 - 1990)
主打
material
High-carbon steel
Coating
black oxide coating
材料:弹簧钢,不锈钢;规格齐全;表面处理按客户要求
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