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Model:002
material:low/medium carbon steel,stainless steel,structural alloy steel technological process:cut precious after hot forging specification:common american system grade: 4.6-12.8,etc features:
1) plating:plated zinc various/black(blue) oxide etc.
2) standards:din 444(din444),gb 798(gb798),m8-m64
free sample! high quality and best price.
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