I. Ingredients:
Yellowish-brown transparent liquid with stable performance and made from complexing agent, antioxidant, reducing agent, penetrating agent and many other active ingredients.

II. Functions:
This product is mainly used in tin-nickel salts coloring, and owns strong stability for stannous ion. Main features:
1. Strong tin stabilizing power: There are potential regulator and sol precipitant in this product to protect stannousion ion.
2. Clear tank liquid: For the oxygenation efficiency is very low. We can use charge neutralization to make tetravalent tin to sol precipitation and use simple filter to keep the the tank liquid clean and clear.
3. Stop grey phenomenon: When the content of tetravalent tin is over 5g/L, the aluminium product surface will appear yellow powder or black powder. For this product has strong tin stabilizing power and sol precipitation ability. The concentration of tetravalent tin will not reach 5g/L.

III. Technical range:
Nickel sulfate: 20-25g/L
Stannous sulfate: 5-10g/L
WF-401 double salts coloring stabilizing agent: 15-25g/L
Sulphuric acid: 17-21 g/L
Starting current density: 0.8-0.9A/d㎡
Quiescent current density: 0.4-0.5 A/d㎡
Voltage: 15-18V
Temperature:18-22℃
IV. Consumption:
Nickel sulfate :1 kg/T type material
Stannous sulfate:2-4 kg/T type material
WF-401 double salts coloring stabilizing agent:3-5 kg/T type material

V. Using method:
Add WF-401 double salts color stabilizer:stannous sulfate=1.5:1. The grounding can be adjusted by adding double salts color stabilizer directly.

VI. Packing and storage:
30kg plastic barrel sealed packing, and stored in cool and dry condition.