Low-cyanide composition:

Zinc metal                                        7.5~12g/L

Sodium cyanide                               20~30g/L

Sodium hydroxide                            85~100g/L

NaCN/Zn                                          2.0~2.5

NaOH/Zn                                          6.5~11.5

Brightener HN -641                          2~3mL/L

Temperature                                   20~45℃

Current density                                0.2~6A/dm2

Current efficiency                            65~8

Consumption:

Brightener H-641                             80~120mL/1000A.H

1. Suitable for rack plating and barrel plating.

2. Excellent covering power and throwing power, even thickness of deposit.

3. Suitable for low-cyanide zinc plating, reduce environment pollution.

4. Can use higher current, it wont be easy to get burnt on high current density area.