1. It does not have the use performance that the product should have, and has not been explained in advance;
2. Not conforming to the product standard requirements explicitly adopted;
3. Non conformance to the quality status indicated by product description, physical samples, etc;
4. The product is unqualified after being inspected by the administrative department of technical supervision and other statutory departments;
5. The product cannot be used normally after two repairs.
6. Regulation: In case of performance failure within 7 days after the product is sold, consumers can choose to return, exchange or repair.
7. The "15 day" rule: if the product has a performance failure within 15 days from the date of sale, consumers can choose to replace or repair it.
8. The "three guarantees validity period" stipulates that the starting time of the "three guarantees" period shall be calculated from the date of delivery. Among the first batch of 18 commodities to implement "three guarantees" issued by the state, such as color TV sets, watches, etc., the "three guarantees" period of validity is divided into six months to one year for the whole machine, and one to three years for the main parts.