I. Introduction: This product is also known as an anti-oxidant copper or copper deactivator. Able within five minutes of rapid oxidation resistance in the copper surface passivation film good, keep copper pieces stored indoors over a year does not change color. Because this product is environmentally friendly synthesis of heterocyclic organic compounds, non-toxic rot, chromic acid and nitrite-free and other harmful substances, biological degradation, making it ideal for high environmental requirements environments. Second, the product advantages: 1, the cost of the economy: the surface area per kilogram medicine can handle 30 ~ 50m2, the share of low cost; 2, convenient and efficient: water-based products, film five minutes fast, easy to use; 3, anti-color capability Strong: copper indoor storage for one year does not change color; 4, non-toxic and environmentally friendly: no heavy metals, RoHS compliant, biodegradable; Third, use: after cleaning the copper pieces immersed in this anti-discoloration agent, soak at room temperature 5 to 30 minutes (the longer the better) after removing, rinse with water after drying or dry clean can be, when dry can not overlap between the workpiece, the drying temperature is recommended not to exceed 80 ℃. If you can be directly used for inter-process rust long soak in this solution. Fourth, note an anti-discoloration before cleaning or pickling process must be cleaned, and ongoing treatment after anti-tarnish treatment when necessary, in order to avoid contamination of the product; 2 if used to prevent discoloration treatment process between the cost-based This product will be considered by an actual situation: 1 to 2 with water use;