Does that prawn know how the advertisement on the wall is sprayed? Is it painted? With what tools? Better be specific.

1. Smaller molds are directly made of hard paper shells (such as PHS advertising, ocean advertising, mobile communication ...) ... find a good position, press it on the wall, and then gently spray it with self-painting (10 yuan can, wholesale 7.5 yuan). Simple and convenient, multi-purpose. Some molds are specially made, such as billboards and neon lights, which can be bought.

2. Large-scale color advertisements are usually color paintings. Design the advertisement first, and then let people with artistic skills draw the outline of the picture or font with black charcoal pen. Then all kinds of brushes go into battle, and then draw an advertising picture on the planned wall.

Nowadays, wall advertisements are generally not used. Most of them buy special film for inkjet printing, and then spray the surface of the film by machine or hand in a special printing house. Manual spray painting generally uses a spray gun with a pneumatic tank, and many advertising companies do it. That is, large-scale wall paintings and billboards supported by steel frames are very common in cities. The first method is practical, simple and convenient, and saves a lot of money. The second method is rarely used, time-consuming and laborious, and it wastes money. As soon as computer-drawn advertising cloth became popular, its decline came.