When there are quality problems in commodities, consumers can complain to sellers or producers, or to relevant regulatory authorities. The specific complaint department may vary according to the type of goods and regions.

I. Complaining to sellers or producers

When the purchased goods have quality problems, you can complain to the seller or producer first. Consumers can contact sellers or producers by telephone, mail, letter, etc. Explain the problem and make a complaint. The seller or producer shall promptly handle the consumer's complaints and bear the corresponding liability for compensation.

Second, complain to the relevant regulatory authorities.

If complaints against sellers or producers cannot be satisfactorily resolved, or serious problems such as security risks and fraud are involved, consumers can complain to relevant regulatory authorities. The regulatory authorities will investigate and handle the complaints and take corresponding regulatory measures.

In China, the State Administration of Market Supervision and its subordinate institutions are mainly responsible for commodity quality supervision. Consumers can call the hotline 123 15, log on to the website 123 15, and use app 123 15 to complain to the market supervision department. At the same time, consumer protection agencies have been set up in various places, such as consumer associations and consumer protection committees, which can provide complaints, advice and help to consumers.

To sum up:

When there are quality problems in commodities, consumers can complain to sellers or producers, or to relevant regulatory authorities. Sellers or producers and regulatory authorities have the responsibility to handle and solve consumer complaints and protect consumers' legitimate rights and interests.

Legal basis:

Article 35 of the Law of People's Republic of China (PRC) on the Protection of Consumers' Rights and Interests stipulates that consumers who suffer personal or property damage in the process of purchasing or using commodities or receiving services shall have the right to compensation according to law. Consumers can demand compensation from sellers, producers or service providers, and they can also complain and report to relevant administrative departments. The relevant administrative departments shall promptly handle consumer complaints and reports, and investigate and deal with violations of consumers' rights and interests according to law.