1, legal personality: the design unit must have independent legal personality, that is, it is legally recognized as an independent legal subject. Ensure that the design unit has a legitimate business status and the ability to take responsibility.
2. Business qualification: The design unit must have the qualifications and conditions to engage in sponge city planning and design, construction, supervision, testing, consulting and other related businesses. Ensure that the design unit has the corresponding professional ability and technical level.