I. Introduction: This product is made of high quality imported surfactants, complexing agents and fog inhibitor compound is made to add this product to the polishing solution containing sulfuric acid system, it is possible to improve the polishing rate of copper pieces, flatness and light brightness. Compared to the traditional three-acid products, the product overcome similar products are not universal, easy to produce tobacco, poor stability defects. Therefore, this product is an alternative to the traditional three-acid products better choice. Second, the product features: 1, a light speed, stable solution: 20 seconds fast light, pharmaceutical stability does not decompose 2, environmentally friendly: no "tobacco", improve the working environment 3, versatility: can basically meet the market 95% Pickling copper polishing using 4, low cost: The cost of the process is only three acid process 40% -60% Third, slotted and use: first take, such as sulfuric acid and sodium nitrate measurement components dissolved in pure water metering, Note that the temperature should not exceed 50 degrees. Then added to the product of 2-3% (to take maximum copper difference). Stir to cool to room temperature can be used. The best advice when using a temperature of 40 to 45 degrees, keeping removed after 20 seconds to 2 minutes, then rinse with water. Polishing time by the extent of surface oxidation of copper to decide. Fourth, note: 1, in the pickling, the workpiece should be appropriate in order to avoid overlap jitter between the workpiece, but not before stirring to form a uniform foam surface is not otherwise easily lead to uneven polishing 2, should as soon as possible after pickling Wash the workpiece with water, such as the case is not ideal brightness pickling may be repeated until qualified 3, pickling if the workpiece has a complicated shape like a blind hole, it is recommended to use a concentration of 0.5-1% of sodium hydroxide solution and After treatment, before subsequent passivation. In order to avoid the pickling liquid into the passivating agent caused the failure. Pickling acid polishing before polishing