Legal basis: According to Article 509 of the Civil Code of People's Republic of China (PRC), the parties shall fully perform their obligations as agreed.
The parties shall abide by the principle of good faith and fulfill the obligations of notification, assistance and confidentiality according to the nature, purpose and trading habits of the contract.
During the performance of the contract, the parties concerned should avoid wasting resources, polluting the environment and destroying the ecology.
Article 543 The parties may modify the contract through consultation.