Industrial oil grease removers are generally categorized into water-based (alkaline), solvent-based, and bio-based cleaners. Water-based removers utilize surfactants and builders to emulsify grease, making them ideal for heavy machinery and floor cleaning. Solvent-based cleaners, often containing hydrocarbons or chlorinated solvents, are superior for precision parts and heavy bitumen but require stricter safety protocols. For eco-conscious procurement, look for biodegradable formulas that use citrus terpenes or soy-based esters.