1. According to the Measures for Bidding for Goods in Engineering and Construction Projects, "Article 25 The technical specifications set forth in the bidding documents shall conform to the provisions of national technical regulations. Each technical specification stipulated in the bidding documents shall not require or indicate a particular patented technology, trademark, name, design, place of origin or supplier, etc., and shall not contain any other content that tends to favor or exclude potential bidders. Where it is necessary to refer to the technical specifications of a particular supplier in order to accurately or clearly state the technical specifications of the goods to be tendered, the words "or equivalent" shall be added after the reference." \x0d\2, According to the Measures for the Administration of Bidding and Tendering for Government Procurement of Goods and Services, "Article 6 No unit or individual shall obstruct and restrict suppliers from freely participating in bidding and tendering activities for goods and services, or designate the brands of goods, suppliers of services and procurement agencies, or use other means to illegally interfere in bidding and tendering activities for goods and services. " \x0d\3, according to the Implementing Measures for Centralized Government Procurement Management of Centralized Units, "Article 26 Centralized units shall not designate suppliers or brands, or put forward exclusive requirements in terms of commercial and technical aspects when implementing specific procurement projects entrusted to them." \x0d\\\\x0d\\\summary, all bidding projects can not specify the brand, otherwise it is a violation of the law.