03-20

2021

The main factors for the uneven color of the oxide film of door and window profiles

When the door and window profile is dyed, the swing in the tank is too large. Because the area of the door and window profile is too large, there are some differences in the contact between the edge and center of the door and window profile and the solution, which will also cause the color of the oxide film on the surface of the door and window profile to be inconsistent.