The reasons why the names of the design company that gave us the renderings and the company that signed the contract are inconsistent are: cooperative relationship and name change.

1. Cooperative relationship: The design company and the company signing the contract are partners. They may have signed a cooperation agreement to complete a certain project together. In this case, the design firm is responsible for the design portion of the project, while the contracting company is responsible for the implementation or management portion of the project.

2. Change of name: The design company changes its name during the project, or after the project is completed, the design company will be acquired or merged with another company, resulting in a change of name.