Internal corners and upper and lower mouths should be brushed with a brush.
2. Spraying method: the spraying pressure should be controlled within the range of 0.4 ~ 0.8 MPa.
When spraying, the spray should be perpendicular to the wall, the distance should be about 500mm, and the spray should move in parallel at a uniform speed.
The overlapping width of two lines should be controlled at 1/3 of the spraying width.
3. Brushing method: First left and then right, first up and then down, first easy and then difficult, first edge and back.