BLACKENING CHEMICALS SUPPLIERS - Top Suppliers of Blackening Chemicals: 1. Birchwood Technologies . Overview: A prominent name in the metal finishing industry, Birchwood Technologies specializes in blackening solutions for a wide range of metals. - Products: . Presto Black®: Hot and room temperature blackening solutions for ferrous metals. . Lumiclad®: Black oxide for aluminum. . MicroLok®: Manganese phosphate for steel.
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