The objective positioning of 1. project functions determines that the designated patents, know-how or services must be used, rather than the subjective requirements of the purchaser. The technical complexity or technical difficulty of the project cannot be used as a reason for single-source procurement.
2. Patents, know-how or services used in the project are irreplaceable. The functional positioning of the project must use specific patents, proprietary technologies or services, and no other alternative technical solutions can meet the same requirements of the functional positioning of the project. If different patents, proprietary technologies or services can be used instead, and the technical requirements of the same or similar project functions can be met, and the quality and efficiency of the project will not be affected, the single-source procurement method shall not be adopted.
3. Patents, know-how or services of products or production processes are exclusive, so that they cannot be implemented or provided by other suppliers, and can only be provided by a specific supplier.