Sheet metal screw
Self-tapping screws for plastics, formed or tapped when screwed into plastic material with pre-drilled or moulded pilot holes.
Black screws are mainly used to fix the bottom or rear shell of black or other dark electrical appliances. Also use black screws. It mainly has several processes such as oxide black, black nickel, black zinc and electrophoresis black.
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18 years of production experience, focusing on screws production. 70 sets of production equipment, with an annual output of over 6,000 tons. Win high praise from customers with high quality.