1. Process characteristics: easy to operate, suitable for rack and barrel plating. Does not contain cyanide. Can produce a dense and uniform thin quad metal sink in zinc aluminum surface for subsequent processes directly copper, nickel, tin, electroless nickel provides good adhesion. 2. Bath composition and operating conditions: raw materials and operating conditions an amount ranging from standard open cylinder aluminum non-cyanide zinc sink 250 ml 180-270 ml / liter temperature 21-24 ℃ 18-43 ℃ time of 30-60 seconds 20-120 second zinc content 11 g / l 8-12 g / l solution 3. Maintenance: non-cyanide zinc supplement Shen aluminum can share calculations. Concentration of the solution at 250 ml / l, the specific gravity of the unit is approximately 1.10, while the specific gravity of the solution should be maintained at between 1.08-1.12. 0.01 per share units need to upgrade supplement 20 ml / liter of aluminum non-cyanide zinc sink each added 22 ml / liter of aluminum non-cyanide zinc sink, providing 1 g / l of zinc content Miss Liu: 0757-81796851 QQ: 3057891720 Website: http: //www.fsrchg.com/