The key is to look at the size of the company and whether there are any cases of cooperation with Beijing companies in the past. Looking for a regular company is more worry-free, and it can also ensure the after-sales service in the later period.
1. See if the company has official website and successful cases of cooperation with other companies. 2. Did Baidu search change companies, Baidu Encyclopedia, and whether the enterprise information is normal? You can find regular companies online.
If you have further requirements, you can ask questions and hope to adopt them.