First, first, see if there is a trademark or brand number printed on the packing box, and the words in small font are printed on the upper right corner or the lower right corner. This kind of packaging means "registered". Only products with recognized quality are eligible to use this kind of packaging. There will be no such logo on the packaging of cottage products.

second, identify the place of production and the manufacturer. Shanzhai products often imitate on the basis of modifying foreign brands, or directly steal trademarks to cheat. At the time of purchase, consumers can pay attention to the manufacturer marked on the product packaging or instructions to confirm whether it is genuine products produced by the company.

at the same time, the country or region of production is often clearly marked on the back cover of electrical appliances, which can be used to judge whether the product is made by a local company or its overseas branch.

if the back cover of the electric appliance is not clearly marked, you can confirm the place of production by looking at the printing place of the instruction manual. In addition, the genuine household appliances produced by regular manufacturers can be easily found from official website, but the cottage products can't, and the authenticity can be quickly judged through this.

Distinguish the quality of refrigerator

First, turn on the power supply, and the compressor should start running immediately, and the working noise should not be less than 5 decibels. If the noise is high, it proves that the quality of the compressor is not good.

secondly, close the door, wait for 3 minutes, then open the door, and feel whether the temperature in the box drops. If it does, and the temperature reaches the range adjusted by the temperature controller, it proves that there is no abnormality in the refrigeration system.

once again, check the defrosting system, press the button, the button should not bounce back, and during defrosting, the frost water flows smoothly from the water tray to the water-saving quilt, otherwise, there is something wrong with the defrosting system. If the drain pipe drips, there is something wrong with the quality of the drain pipe, so it is best not to buy it.

finally, check the refrigerator door seal and press it with your fingers, which should feel soft and elastic. Generally speaking, a good door seal should not see the light in the box from the outside. If you can see it, you'd better not buy it, so as to avoid the door seal being lax, which will lead to the leakage of cold air from the refrigerator.