I think in the early stage, you should find two or three strong advertising companies to communicate with them in depth, let them know about your company and give a reasonable plan.
In this process, you will find that the price and scheme of the advertising company are the most reasonable (of course, the advertising companies with high fees are more powerful), and then you will adopt the scheme of that advertising company. At this time, you should be cautious. The advertising company you choose had better provide long-term follow-up service for your enterprise, so that your enterprise and visual identification system can be well expressed to customers. Let consumers identify the brand and concept of your company's unified operation.
Now advertising companies are also divided into: brand planning management and pure design advertising companies. Because you are a big company, you should choose a brand planning advertising company, so that they will make a reasonable integration plan for your company, and the advertising expenses and market-oriented consumer groups will definitely make a plan systematically. Their success story is the best channel for you to examine the strength of this advertising company. The successful case of the advertising company you choose should be the well-known enterprises you have heard of or around. A really good planning company doesn't know what it is doing, but lets you know how they are going to operate.