... Product Description It can promptly and thoroughly remove the interior dust and oil crust of the circuit boards of precision ... to short circuit of precision electronic instruments. It is safe for all rubber, plastic, metal, veneer, coating withour corrosiveness. ... cleaning components, and free of Freon. It is harmless for the environment.Technical Date AppearanceOdorDensity(1g/cm3)Evaporate Residue % ...