Surface conditional help activating the substrate prior to phosphate process. It leads to a better result where a thin and homogenous phosphate layer can be obtained and finally, coating adhesion can be improved remarkably.

Pretreated chemical Surface conditional
Process Dipping
Content (%) 1.5kg per 1000 litre of water
PH value 8 ~ 10
Control PH with Soda ash

Read the complete instruction of metal pretreatment