Crude Palm Oil (CPO), Crude Palmolein, RBD (refined, bleached, deodorized) Palm Oil, RBD Palmolein and Crude Palm Kernel Oil (CPKO) are the various edible forms of Palm Oil traded in the market. While Oil is the stable derivative (saturated fat, solid at room temperature) of fresh fruit crushed, Olein is relatively unstable (unsaturated fat, liquid at room temperature, but low cholesterol).