Which company is good at making billboards in Nanchang, and what is the price and service?

There are thousands of companies, large and small, making billboards all over Nanchang. Our company is a chain store. We have looked for many advertising companies to do it, but they always fail to meet our requirements, and the progress and service are very poor. We feel cheated. Later, we found Nanchang Ganxin Advertising Media Company. The service attitude was very good, and more importantly, it was professional and the price was reasonable. At that time, I also visited their company, which was well equipped and the employees cooperated closely. Let's rest assured that we can cooperate. Definitely not an advertisement. I hope I can help more people if there is a need. Don't be deceived by some third-rate advertising production companies.