1. The Patent Law of the People's Republic of China: This law stipulates the protection scope and application procedures of invention patents, utility model patents and design patents. If the procurement requirements design drawings involve patent rights, the relevant provisions of the Patent Law shall be observed.
2. Copyright Law of the People's Republic of China: This law stipulates the scope of copyright protection and application procedures, including the creation, publication, distribution and exhibition of works. If the procurement of demand design drawings involves copyright issues, the relevant provisions of the Copyright Law shall be observed.
3. Trademark Law of the People's Republic of China: This law stipulates the scope of trademark protection and application procedures, including trademark registration, use and transfer. If the purchase demand design drawings involve trademark issues, the relevant provisions of the Trademark Law shall be observed.
4. Contract Law of the People's Republic of China: This law stipulates the signing, performance, modification and dissolution of contracts, including the signing and performance of design drawings for procurement requirements. If the procurement requirements design drawings involve contract issues, the relevant provisions of the contract law shall be observed.