1. There are two kinds of electric pressure cookers: computer version and mechanical version. Generally, the price of the mechanical version of the same style is lower than that of the computer version 100-200 yuan.

2. The electric pressure cooker is made of stainless steel, black crystal and Tao Jing. Tao Jing tanks should be better at present.

3. The price of electric pressure cooker with stainless steel liner ranges from 300 to 800. The lowest price of heart-to-heart electric pressure cooker is 249 yuan for mechanical version and 329 yuan for computer version. It belongs to reliable quality, and the prices of Jiuyang, Supor and Midea are higher. There is little difference in other functions of the electric pressure cooker except the inner container. As long as it is not man-made damage, the service life is generally similar.