I. Introduction: This product is neutral, suitable for all types of metal attached to the surface remove stubborn grease and dirt, especially for higher copper and aluminum, carbon steel and labor requirements of the occasion, play a protective material does not hurt discoloration and corrosion hand effect. This product is nontoxic, so after use without any waste water treatment can be directly discharged. Second, the product advantages: 1, PH value neutral does not hurt the workpiece 2, 3 straight row does not pollute the environment, cleaning copper and aluminum will be brighter 4, three steel rust effect, use: This product is formulated to 5% (weight ratio) in water, at room temperature or heated to 60 to 70 degrees used (the higher the temperature the better the degreasing effect); workpiece immersed in the cleaning agent for about 5-15 minutes, such as the use of spray cleaning treatment time was typically 3 to 5 minutes, with the best use of ultrasound. Until the surface of the oil cleaned up, then rinse with water.