According to Article 12 of the Anti-Unfair Competition Law, when selling goods, operators shall not tie in the goods against the buyers' wishes or attach other unreasonable conditions. According to the General Principles of the Civil Law and the Contract Law, one or both parties may attach certain conditions to the transaction, but the additional conditions must be reasonable and legal, otherwise it may constitute unfair competition.
Extended data
According to the Law of People's Republic of China (PRC) on the Protection of Consumer Rights and Interests
Article 9 Consumers have the right to choose their own commodities or services.
Consumers have the right to choose their own operators to provide goods or services, choose their own varieties of goods or services, and decide whether to buy or not to buy any kind of goods or accept or not to accept any kind of services.
Consumers have the right to compare, identify and choose their own goods or services.
Article 10 Consumers have the right to fair trade.
When purchasing goods or receiving services, consumers have the right to obtain fair trading conditions such as quality assurance, reasonable price and correct measurement, and have the right to refuse the compulsory trading behavior of operators.
Article 11 Consumers who suffer personal or property damage due to purchasing or using commodities or receiving services have the right to compensation according to law.
Twelfth consumers have the right to establish social organizations to safeguard their legitimate rights and interests.
Baidu Encyclopedia-People's Republic of China (PRC) Consumer Rights Protection Law