Is it legal for developers to change service companies without setting up industry committees?

It is legal for the developer to change the property by himself without setting up an industry Committee and the owner signing the opinion questionnaire.

Under normal circumstances, a single owner does not need to sign a management contract with the property company alone. Before the establishment of the industry committee, the developer and the property company signed the preliminary property entrusted management contract; After the establishment of the industry committee, the industry committee will sign a property management contract with the property management company on behalf of the owners.