If the wholly-owned subsidiary of the purchaser can build itself, can it not invite bids?

Legal analysis: Yes, the buyer can build, produce or provide it by himself according to law. There is no need for public bidding.

Legal basis: Article 7 of the Regulations for the Implementation of the Bidding Law of People's Republic of China (PRC) requires that the project examination and approval procedures should be handled in accordance with the relevant provisions of the state, and should be reported to the project examination and approval department for examination and approval. The project examination and approval department shall promptly notify the relevant administrative supervision departments of the scope, method and organizational form of the tender determined by the examination and approval.