You have to know the basics of stainless steel

Stainless steel is a high alloy steel that resists corrosion. it has a beautiful surface, not to be plated or painted on the surface, so many mechanical plants to indicate that it is stainless steel, often do not do any paint treatment, and the black wood ( so - called black wood is the name of general steel ) is must be antirust treatment.
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2020-08-23