The oil-fume-free pan adopts the special one-time precision casting technology of aerospace superhard special ceramic alloy containing magnetized molecules, which integrates the principles of conduction, convection and radiation. The thermal conductivity is as high as 175, which is four times that of iron. It has the advantages of fast heat transfer, uniform heating and no local high temperature. When cooking and heating, the temperature difference in the pot will not be higher than 50℃, so there is no need to increase the heat, and it is only kept within the critical temperature of 240℃ for the cracking and volatilization of edible oil. In addition, the inner surface of the pot body adopts the computer numerical control carving micro-thread non-stick process, which has the function of "micro-air cushion thermal slow conduction", so that the pot body can achieve permanent physical non-stick, non-scorching, non-burning bottom and no carcinogen, and its service life is 5- 10 times longer than that of ordinary pots. It is an essential tool for family life.