Functions and Uses：
1. DU-456 takes the chemical methods to strip the nickel deposit and nickel-iron alloy deposit on the copper or copper alloy substrates.
2. The advantage of DU-456 includes the low operating temperature and the rapid striping speed. The solution obtains extraordinary lifetime.
3. No risk of the substrate attack so it can save the rework polishing process after stripping.
DU-456 120g / L
Sulfuric acid (specific gravity 1.84) 60 mL / L
Temperature 25 ~ 75 ℃ (not more than 75 ℃)