Chromium Car

The chrome plating chemicals are very toxic. Disposal of chemicals is regulated in most countries.
Hexavalent chromium
Hexavalent chromium plating, also known as hex-chrome, Cr+6, and chrome (VI) plating, uses chromic anhydride, also known as chromium trioxide, as the main ingredient. Hexavalent chromium plating solution is used for decorative and hard plating, along with bright dipping of copper alloys, chromic acid anodizing, and chromate conversion coating.