Handan Yunzhe Fastener Manufacture Co.,Ltd
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GB97 High Strengh Black Flat Washer | The material of high-strength flat washer is 45# steel, modulated in large constant temperature of furnace. The hardness is up to 200HV with smooth... |
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GB97 High Strengh Black Flat Washer | The material of high-strength flat washer is 45# steel, modulated in large constant temperature of furnace. The hardness is up to 200HV with smooth... |
