This product is suitable for low cyanide alkaline zinc, potassium cyanide-free zinc salts and galvanized environmental passivation agent. This passive film with bright yellow green, and this production can compensate crystal trivalent chromium passivation agent colorful colors on the market do not deep flaws, and excellent corrosion resistance, simple film speed, is the best three-chromium green yellow green passivating agent, eliminating the chromium contamination in the production process, but also to meet the needs of the product no hexavalent chromium, in line with the European Union and the United States GMF0025 and GIVIW3044 standards. This solution is stable, long life, easy to operate, salt spray test up to 72 hours. First, the use of technology: TN-620A agent ratio: 8% to 10% manual automatic 5% ~ 8% TN-620B agent ratio: Manual 4% to 8% 4% PH value of 2.0 automatic temperature 20-40 ℃ can at room temperature immersion time 30-80 seconds Second, the process of galvanized - washing a light 0.5% to 1% dilute nitric acid) -TN-620 green yellow trivalent chromium passivation agent - washing ⑿ washes) a water-based protective agents closed - Rejection dry - drying 70-80 degrees (10-20 minutes) - Finished Third, pay attention: 1, 8 micron zinc coating required to achieve more than 2, in accordance with the usual consumption TN-620A agents, TN-620B agent 3: 1 Add 3. Add Method: passivation solution should add less spare, and have someone to supplement according to the color shades. High Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized Qinghuang trivalent chromium passivation agent, environmentally friendly Qinghuang galvanized zinc passivated agents, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized Qinghuang trivalent chromium passivation agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly zinc galvanized trivalent chromium passivation agent Qinghuang high Nyman New Chemical Materials zinc galvanized trivalent chromium passivation agent Qinghuang high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, trivalent chromium Green yellow zinc passivation agents, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized Qinghuang trivalent chromium passivation agent, environmentally friendly zinc galvanizing Qinghuang passivating agent , environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent Trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized Qinghuang trivalent chromium passivation agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance Man New Chemical Materials trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, trivalent chromium Qinghuang Galvanized passivating agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man trivalent chromium passivation agent Qinghuang zinc galvanized high resistance Man environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized Qinghuang trivalent chromium passivation agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, three trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized Qinghuang trivalent chromium passivation agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to Man New Chemical Materials zinc galvanized trivalent chromium passivation agent Qinghuang high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, trivalent chromium plating Qinghuang zinc passivation agents, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man trivalent chromium passivation agent Qinghuang zinc galvanized high resistance to Man TN-620 environmentally friendly trivalent chromium passivation agent Qinghuang zinc, zinc galvanizing Qinghuang trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized, galvanized zinc passivated Qinghuang environmentally friendly agents, environmental protection type of trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent Qinghuang zinc galvanized chrome passivation agent Qinghuang galvanized trivalent chromium passivation agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemical Man new materials trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized trivalent chromium Qinghuang passivating agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man trivalent chromium passivation agent Qinghuang zinc galvanized high resistance to environmental Man TN-620 type Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized Qinghuang trivalent chromium passivation agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly Trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium Qinghuang zinc galvanizing passivating agent, trivalent chromium passivation agent Qinghuang galvanizing, zinc galvanizing environmentally friendly Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemical New Man Materials trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized trivalent chromium passivation Qinghuang agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man Qinghuang trivalent chromium passivation of zinc galvanizing agent environmentally friendly high Nyman TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized Qinghuang trivalent chromium passivation agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environment-friendly three trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium Green yellow zinc galvanizing passivating agent, trivalent chromium passivation agent Qinghuang galvanized, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man Trivalent chromium passivation agent Qinghuang zinc galvanized high Nyman environmentally friendly TN-620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized trivalent chromium passivation Qinghuang agents, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent chromium passivation agent Qinghuang zinc galvanized, high resistance to chemicals and new materials Man Qinghuang zinc galvanized trivalent chromium passivation agent environmentally friendly high Nyman TN -620 Qinghuang zinc trivalent chromium passivation agent, trivalent chromium passivation agent Qinghuang galvanized zinc, galvanized Qinghuang trivalent chromium passivation agent, environmentally friendly zinc galvanizing Qinghuang passivating agent, environmentally friendly trivalent Qinghuang zinc galvanized chrome passivation agents, high resistance to chemicals and new materials Man Qinghuang zinc galvanized trivalent chromium passivation agent