Initially judge that the goods you buy are ordinary goods, not the brands you say. First of all, you should check whether you bought it in a formal channel, such as a large supermarket, and whether you have a receipt or invoice. Secondly, regular goods are clearly marked with trademarks, factory addresses, factory names, customer service telephone numbers and so on.

According to Article 8 of China's Consumer Protection Law, consumers have the right to know the real situation of the goods they buy or use or the services they receive.

Consumers have the right to require business operators to provide prices, places of origin, producers, uses, performance, specifications, grades, main ingredients, production dates, expiration dates, inspection certificates, instructions for use, after-sales services or the contents, specifications and expenses of services, etc. according to different conditions of goods or services.

Article 48 A business operator who provides goods or services under any of the following circumstances shall bear civil liability in accordance with the provisions of other relevant laws and regulations, except as otherwise provided in this Law:

(a) The goods or services are defective;

(two) the goods do not have the performance that the goods should have and are not explained at the time of sale;

(three) does not meet the commodity standards indicated on the commodity or its packaging;

(four) does not meet the quality conditions indicated by commodity descriptions, physical samples, etc.;

(five) the production of goods explicitly eliminated by the state or the sale of invalid or deteriorated goods;

(six) the number of goods sold is insufficient;

(seven) the service content and fees are in violation of the agreement;

(8) Deliberately delaying or unreasonably refusing consumers' requests for repair, rework, replacement, return of goods, replenishment of commodity quantity, refund of payment for goods and service fees or compensation for losses;

(nine) other circumstances that harm the rights and interests of consumers as stipulated by laws and regulations.

Business operators who fail to fulfill their obligations to protect consumers' safety and cause damage to consumers shall bear tort liability.