Advertising company: Because I am an advertising company, I usually have printing, inkjet printing, outdoor production and advertising, and I am always welcome. But for advertising companies, their main business is to provide promotional assistance programs for corporate customers. Simply put, it is to provide some copywriting (writing advertisements and the like) and image processing (designing advertising maps, TV dramas, comics and so on. Starting from this definition, printing houses and media companies have become the next process enterprises of advertising companies. Simply put, the list of printing, inkjet printing and media release made by customers due to advertising is contracted by advertising companies to printing houses and media companies.
Media company: an enterprise that owns and maintains certain media resources. His definition is to provide a "megaphone" for enterprises that need publicity, such as Sina, Southwest International and Focus Media.
Printing plant: I don't need to explain this.
Let's give a simple example: for example, a furniture company needs to promote its products. He first found an advertising company, such as mine. The advertising company will help him analyze and find a suitable way of publicity, such as advertising on the elevator in the community. Then I will send someone to this company to shoot some products, take beautiful pictures and match them with beautiful advertising slogans. Then I will go to a media company that provides elevator advertisements, such as Focus Media. Finally, I found a printing factory and asked it to print out the pictures I designed. I put them in the elevator.
I hope you can understand the hard work.