The shelf life of products refers to the quality guarantee period of products under normal circumstances. The shelf life of the product is provided by the manufacturer and marked on the product for limited use. During the warranty period, the manufacturer of products is responsible for the quality of products meeting relevant standards or explicitly guaranteed quality conditions, and the seller can sell these products with confidence, and the consumer can use them with confidence.

Shelf life refers to the best edible period and the shortest applicable date. That is, within this period, the product is completely suitable for sale, and the sensory characteristics, physical characteristics, nutritional components and safety of the food meet the product standards. Over the period specified on the food label, some sensory characteristics such as color, aroma and taste of food may change, but it still meets the hygiene standards and can still be eaten for a certain period of time.

Shelf life refers to the recommended last edible date. The last edible period after storage according to the conditions specified on the food label (temperature, humidity, cool and dry). After the final consumption period, the sensory characteristics, physical characteristics, nutritional components and safety of food may no longer meet the requirements of product standards, and even become moldy and deteriorated. Food ingredients are complex, so it is difficult to determine the strict and accurate shelf life. Generally, it is determined according to years of experience and storage experiments, so it is the recommended final edible period.

"Warranty" refers to the free maintenance of products that meet the requirements of "Three Guarantees" in accordance with the national "Three Guarantees" regulations. "Warranty" is the time limit for ensuring product repair and the obligation that product producers must fulfill.

The warranty period is free, and the warranty period is paid by the consumer.

The shelf life is generally food and medicine. Manufacturers who have food problems outside the shelf life are not responsible, and manufacturers who have quality problems within the shelf life are fully responsible;

The warranty period is generally household appliances and clothing, and quality problems can be repaired and returned free of charge during the warranty period;

The warranty period is generally household appliances, bulky goods and so on. If there is a problem during the warranty period, the manufacturer can pay for the maintenance, that is, spend a small amount of cost to repair;

"Three guarantees" are specifically: guaranteed repair, replacement and return. That is, free repair, return and replacement, and customers don't have to spend money. The three-guarantee period is also the warranty period, replacement period and return period.