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Why stained steel non-standard screws will be black in daily life, and how to solve
Bolt Dropper 6 X 1'' Black Oxide Coated Stainless Flat Head Phillips Wood Screw, (25 pc), 18-8 (304) Stainless Steel Screws Corrosion Resistant Flat Head by Bolt Dropper: : Industrial & Scientific
Why stained steel non-standard screws will be black in daily life, and how to solve it？
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