Functions and Uses：
1. DN-962 is used to neutralize (reduce) the residue of Cr6 + ions on the etching surface to increase the adhesion of deposits.
2. Prevent the Cr6 + ions from contaminating the other solvents.
3. Excellent effect, extraordinary lifetime, longer renewal cycle and cost saving.
4. Effectively reduce the Cr6 + ions and that decreases the complicity of wastewater treatment.
Concentrated hydrochloric acid 50~100mL/L
Mixing Air Stirring