Can the bidding documents specify the brand of the materials?

You can't. No brand shall be designated in public bidding activities, and the Government Procurement Law of People's Republic of China (PRC) stipulates that no unit or individual shall obstruct or restrict suppliers' free access to the government procurement market in their own region and industry by any means. Designating brands in public bidding restricts the bidding of other suppliers.

A tenderer who commits one of the following acts shall restrict or exclude potential bidders or bidders with unreasonable conditions:

(1) Providing different project information to potential bidders or bidders of the same project subject to tender;

(2) The qualification, technology and business conditions set are not suitable for the specific characteristics and actual needs of the project subject to tender or have nothing to do with the performance of the contract;

(three) the project subject to tender according to law is based on the performance and awards of a specific administrative region or a specific industry as a condition for extra points or winning the bid;

(4) adopting different qualification examination or evaluation criteria for potential bidders or bidders;

(5) Defining or designating a specific patent, trademark, brand, country of origin or supplier;

(six) the project that must be subject to tender according to law illegally restricts the ownership or organizational form of potential bidders or bidders;

(seven) to restrict or exclude potential bidders or bidders by other unreasonable conditions.

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