1. Article 9 of the Regulations on the Bidding Law of People's Republic of China (PRC): Except for the special circumstances stipulated in Article 66 of the Bidding Law, bidding shall not be conducted under any of the following circumstances: irreplaceable patents or know-how are needed.
Two. Government Procurement Law: Article 30 Goods or services that meet any of the following circumstances may be procured by competitive negotiation in accordance with this Law:
(a) after the tender, there is no supplier to bid, or there is no qualified target, or the new tender cannot be established;
(two) the technology is complex or special, and it is impossible to determine the detailed specifications or specific requirements;
(three) the time required for bidding can not meet the urgent needs of users;
(4) The total price cannot be calculated in advance.
Where the subject matter is a patented product, it refers to one of the products with complex technology or special nature, and it is impossible to determine the detailed specifications or specific requirements. Bidding may not be needed, but competitive negotiation is needed for procurement.