1. Custody company area: First-tier cities in Guangzhou, Guangzhou and Shenzhen are generally better than second-and third-tier cities, mainly because there are many bidding talents in first-tier cities;

2. official website case, custody company: demonstration of bidding custody cases in various industries;

3. Who is supervising: the project is supervised by the tender commissioner or tender manager or director;

4. Time of company establishment: The longer the company is established, the better;

Summary: In fact, it mainly depends on the ability of the custodian, which is very important, just like the company's bidders. Of course, the tender director is very capable. Bidding promotion is an advertisement on the internet; Bidding custody is to entrust this kind of business to a third party company or individual. This business is not limited to regions, and services can be found all over the country.