1. From the price point of view, it must be made in China with high cost performance. Although they are all high-end pots, the Japanese polar iron pot is inferior in transportation cost and labor cost.
2. From the perspective of rust prevention, Japanese polar iron pots adopt nitriding rust prevention technology. According to official data, there is a permeable layer of 10- 15 micron, which can withstand the boiling of salt water for 1.5 hours, and its rust prevention ability is better than that of ordinary iron pans. However, Tiewa Commune iron pot adopts patented nitrogen smothering antirust technology. This technology is to nitride the surface of iron workpiece for a long time in high temperature and vacuum environment, so as to form a uniform and dense nitride layer on the surface, with a depth of 25-30 microns and a thickness of 2-3 times that of Japanese polar iron pan, and the technology goes further.
3. The iron pot of Tiewa Commune is about 1KG, which is equivalent to the weight of two bottles of mineral water and half of the traditional iron pot. Japanese polar iron pots are heavier, about 1.37KG, and the figure is similar. In fact, the weight of half a catty can still feel the gap when one hand is needed.