This product can rapidly coat the surface of plastic parts, rubber hose, wire, electrolytic head, which in the engine compartment. It can form a permanent polymer film on the outside，to achieve an effect of anti-ageing, insulation, waterproof, oil proof and dustproof. Using it regularly can protect the surface of the interior parts of the engine compartment, and reduce the danger of the short circuit caused by aging line, to ensure traffic safety.