Cast iron pots are formed by casting pig iron in molds, while refined iron is formed by hand forging or machine pressing.
Cast iron pots are thick, rough in surface, not resistant to falling, and slow in heat transfer and heat dissipation. Heat will be stored in the whole pot, which will form thermal radiation to the country, which is called pot gas. One reason why there are many cast iron pots in China is that the firepower of domestic stoves is much weaker than that of restaurants or firewood. Cast iron is slow in heat dissipation, so that the temperature of the pot will not drop instantly when the vegetables go in.
The thin iron pot has good heat transfer, is stronger and lighter, and can pour spoons. Although the heat dissipation is fast, it can quickly transfer the temperature of the fire to the ingredients. Therefore, this kind of pot is used in a hotel fire, and the super firepower will not make the pot cold. Zhangqiu iron pot belongs to this kind of refined iron forging pot. If you like cooking, it's not bad to buy a thin iron pot if the stove at home is stronger than the general firepower. As for hand-beating and machine-pressing, you get what you pay for. Cheap mechanical pressure cooker is a smooth iron plate, which is easy to stick to the pot. The surface of the advanced pot is uneven, and the contact surface with food is small. You can stick an oil film to separate the food, and it is not easy to stick to the pot (if you want to use it).
I don't think there is much difference in the feel of cast iron pots, but they are cheap and easy to contain many impurities, and the quality is not good, which may be toxic. Just buy a regular big brand with hundreds of dollars.