Automatic film production line

A treatment method for a magnesium alloy surface chemical passivation film can form a passivation film layer on the magnesium alloy surface, which can increase the corrosion protection of the magnesium alloy surface. For metal coating, the pre-operation chemical film is of great importance. It can provide stable and high-quality film treatment on magnesium alloy metals and serve as surface pretreatment before liquid coating and powder coating.