●The product is manufactured by German Veslee Chemical Technology CO., Ltd. with formulation and technology. It is made from international high-quality raw materials.Only 3 minutes, no need to disassemble the engine, it can quickly remove crankcase, piston, thimble,master of fine oil passage for carbon deposition, glue, impurities and sediment oxidation, etc., which makes the valve and sets of ring flexible and clean the lubrication system. It enhance embellish smooth and reduce friction, effectively improve the efficiency of engines, enhance motivation, restore the engine peak, reduce the fault, prolongs the service life of the engine. No harm to the other parts.