TN-400 galvanized trivalent chromium passivation agent, blue and white, a wide range of operational and management easy to get bath blue-white appearance. 1. do not use ?? specialty oxidants. 2. All kinds of galvanized roll, hanging plating are applicable, and a uniform blue-white appearance. 3. neutral salt spray test white rust of time between 72 to 120 hours. ?? Use a galvanizing process. (Thickness: at least 8 microns) → washing → two light (nitric acid: l%) → two two washing → passivation → washing → drying (70-100 ℃) ※ production operation passivation of zinc metal content was controlled at 8g / L or less, iron metal content control in 80mg / L or less. II. Processing Conditions Condition Range reference value TN-400 30 ~ 70 / L 40ml / L Temperature 20 ~ 30 ℃ 25 ℃ dip Ze time 10 to 30 seconds 15 seconds stirring air or mechanical air four, the preparation and maintenance of a passivating solution, To join in the passivation bath with two-thirds of the volume of water, adding TN-400 passivation solution, add water to the required volume, stir, detection passivation solution PH value (with diluted nitric acid or 10% of the hydroxide sodium adjust the PH value), heated to operating temperature can be put into operation. 2, PH value of the operation during passivation passivation solution will gradually rise, add dilute nitric acid or TN-400 passivation solution (based on analysis of the concentration of added) to reduce the PH value. 3, bath supplemented by timing TN-400 to maintain, add the amount of: rack: 0.75- 1.5L / 100m2 Barrel: 1.2-3.0L / 100m2 due to the different shape of the workpiece, bring out different amounts suggested by the analysis added. 4, when the workpiece after processing a large area of ??yellow spots or white spots are now adjusted invalid, the proposed re-allocation slot. Changzhou High salt spray trivalent chromium blue white, high salt spray trivalent chromium blue passivation agents, high salt spray blue discoloration of trivalent chromium passivation agent, blue white green trivalent chromium, trivalent chromium salt spray Beijing high blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai green blue passivation agents, high resistance to high salt spray Man trivalent blue Changzhou High trivalent chromium salt spray blue white, high salt spray trivalent chromium blue passivation agents, high salt spray does not change color trivalent chromium passivation agent blue, green blue white trivalent chromium, trivalent chromium salt spray Beijing high blue / blue white passivation agents, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai green blue passivation agents, high resistance to high salt spray Man trivalent blue fog Changzhou High trivalent chromium blue white, high salt spray three chromium blue passivation agents, high salt spray blue discoloration of trivalent chromium passivation agent, blue white green trivalent chromium, trivalent chromium salt spray Beijing high blue / blue white passivating agent, Changzhou High Nyman high Salt spray trivalent chromium blue passivation, Shanghai green blue passivation agents, high resistance to high salt spray Man trivalent blue fog Changzhou High trivalent chromium blue white, high salt spray trivalent chromium blue passivation High salt spray does not change color trivalent chromium passivation agent blue, green blue white trivalent chromium, trivalent chromium salt spray Beijing high blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivating agent, Shanghai Environmental blue passivation, high resistance to high salt spray Man trivalent blue fog Changzhou High trivalent chromium blue white, high salt spray trivalent chromium blue passivation agents, high salt spray discoloration three chromium blue passivation, green trivalent chromium blue white, Beijing high salt spray trivalent chromium blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai green and blue White passivating agent, high resistance to high salt spray Man trivalent blue fog Changzhou High trivalent chromium blue white, high salt spray trivalent chromium blue passivation agents, high salt spray blue discoloration of trivalent chromium passivation agent , green blue white trivalent chromium, trivalent chromium salt spray Beijing high blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai green blue passivation agents, high resistance Man high salt spray fog Changzhou High trivalent blue trivalent chromium blue white, high salt spray trivalent chromium blue passivation agents, high salt spray blue discoloration of trivalent chromium passivation agents, environmental trivalent chromium blue white , Beijing high salt spray trivalent chromium blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai green blue passivation agents, high resistance to high salt spray trivalent Blue Man Changzhou High white blue white fog trivalent chromium, trivalent chromium salt spray high blue passivation agents, high salt spray blue discoloration of trivalent chromium passivation agents, environmental trivalent chromium blue white, Beijing high salt spray trivalent chrome blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai green blue passivation agents, high resistance to high salt spray Man trivalent blue Changzhou High salt spray trivalent chrome blue white, high salt spray trivalent chromium blue passivation agents, high salt spray does not change color trivalent chromium passivation agent blue, green blue white trivalent chromium, trivalent chromium salt spray Beijing high blue / blue white blunt agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai green blue passivation agents, high resistance to high salt spray Man trivalent blue fog Changzhou High trivalent chromium blue white, high salt spray Trivalent chromium blue passivation agents, high salt spray does not change color trivalent chromium passivation agent blue, green blue white trivalent chromium, trivalent chromium salt spray Beijing high blue / blue white passivating agent, Changzhou High Nyman High salt spray trivalent chromium blue passivation, Shanghai green blue passivation agents, high resistance to high salt spray Man trivalent blue fog Changzhou High trivalent chromium blue white, high salt spray trivalent chromium blue passivation agents, high salt spray blue discoloration of trivalent chromium passivation agent, blue white green trivalent chromium, trivalent chromium salt spray Beijing high blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue White passivating agent, Shanghai Environmental blue passivation agents, high resistance to high salt spray Man trivalent blue fog Changzhou High trivalent chromium blue white, high salt spray trivalent chromium blue passivation agents, high salt spray does not change color Trivalent chromium passivation agent blue, green blue white trivalent chromium, trivalent chromium salt spray Beijing high blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai Environmental Protection blue passivation agents, high resistance to high salt spray Man trivalent blue fog Changzhou High trivalent chromium blue white, high salt spray trivalent chromium blue passivation agents, high salt spray blue discoloration of trivalent chromium passivation agents, environmental trivalent chromium blue white, Beijing high salt spray trivalent chromium blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai green blue passivation agents, high Nyman high salt spray fog Changzhou High trivalent blue trivalent chromium blue white, high salt spray trivalent chromium blue passivation agents, high salt spray blue discoloration of trivalent chromium passivation agents, environmental trivalent chromium blue White, Beijing high salt spray trivalent chromium blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai green blue passivation agents, high resistance to high salt spray trivalent Man Changzhou high blue blue white fog trivalent chromium, trivalent chromium salt spray high blue passivation agents, high salt spray blue discoloration of trivalent chromium passivation agents, environmental trivalent chromium blue white, Beijing high salt spray three chromium blue / blue white passivating agent, Changzhou high resistance to high salt spray Man trivalent chromium blue passivation, Shanghai green blue passivation agents, high resistance to high salt spray trivalent blue Man