Functions and Uses：
1. Single dose, wild operating parameters and broad range of acceptability of PH. The operating temperature is from the low to the room temperature.
2. Uniform color and no yellowing in the storage.
3. Suitable to the passivation treatment of all kinds of galvanizing process.
4. With the consistent reaction speed, BK-6 can minimize the occurred yellowing condition in the workpieces composed with a large flat plus complicated structure.
5. Excellent corrosion resistance in acid zinc plating process, the rack plating can reach 144H whereas the barrel plating is up to 72H.