Blackening chemicals manufacturers -Manufacturers of blackening chemicals typically produce products specifically designed for metal finishing and corrosion protection. These chemicals are used to create black oxide coatings on metal surfaces, providing aesthetic appeal, corrosion resistance, and increased durability. Here are some well-known manufacturers of blackening chemicals: 1. Birchwood Technologies: 2. Product: Birchwood Casey offers a range of blackening and finishing products under the Presto Black line. These include cold blackening solutions for various metals like steel, iron, and stainless steel. 3. Features: Birchwood's blackening solutions produce a durable black oxide finish that is corrosion resistant and enhances the appearance of metal parts. 4. Applications: Commonly used in industries such as firearms manufacturing, automotive, and general metal fabrication.