Blackening Chemicals Application - The blackening process (or black oxide coating) is a surface treatment used to create a thin, corrosion-resistant, black finish on metal parts. It\'s primarily applied for aesthetic purposes, reducing light reflection, and improving mild corrosion resistance. Below is a guide on blackening chemicals and their applications: * Blackening Chemicals 1. Cold Blackening - Chemical Composition: Copper selenium solution or proprietary mixtures. 2. Application: Applied at room temperature. Ideal for small-scale applications or when heating is not possible. 3. Advantages: Simple and quick process. Lower setup costs. 4. Limitations: Less durable and corrosion-resistant compared to hot blackening. 5. Typical Uses: Decorative parts, light-duty tools, and hardware. # Blackening Chemicals Manufacturer.