1) Product Features: Produced on high pressure, to reduce the damage of active ingredient in bleaching by using physical methods instead of chemical decolorization, with the characteristics of light in color, anti-consumption, strong leveling. 2) Quality Standards: Q/LZ 01-2008 Appearance: yellow transparent liquid PH Value: 5 Dioptre: 74 Solubility: No turbidity, Well soluble in water Assay: 98% Butynediol: 1.75% Density: 1.1-1.2 3) Application Dosage:20-100mg/L Consumption: 8g/KAH Usage: Long-lasting Brightener and weak leveling agent in nickel bath Characteristic: can refine crystalline coating