Our company’s building is capped with promotional advertising banners, but the ones on the market are all monochromatic, and the boss doesn’t want them.

There are many production processes for advertising banners for promotion. The traditional process is screen printing, which was later reformed into thermal transfer banners, and then improved into laser banners. The latest process is digital. Full color banner banner. I saw this in Jingchuang Advertising Mall. If you are interested, search it on Baidu!