How did the electric fan power cord get short?

Ms. Li bought a high-end electric fan of a certain brand a few days ago, but when she was ready to use it, she found that the power cord of the new electric fan could not reach the wall socket, and the electric fan of the same brand at home has been using this socket. Ms. Li took a ruler to measure and found that the new fan power cord was more than 30 centimeters shorter than the original. In desperation, Ms. Li bought a new power socket to connect. The sales staff of a shopping mall in the city also reflect that the power cord of many household appliances has a trend of continuous shortening, especially for some small household appliances, and the trend of the power cord becoming shorter is more obvious. For example, the original power cord length of some brands of microwave ovens, induction cookers and rice cookers is about 150 cm, but now most of them are only about 120 cm, and some are even less than 100 cm. In addition, the same category of different brands of electrical products, the length of the power cord gap is also large, for example, the power cord of a foreign brand washing machine, it is more than 70 centimeters longer than the power cord of another foreign brand washing machine.