The first type has been used in industries such as car paint booths, iron plate heating, etc. where heating and drying are required. Later, the health care market slowly heats up and is used in health care products. But with the chip heater, the tube was slowly eliminated. Because the local temperature of the tubular heater is particularly high, the body feels hot and cold unevenly; secondly, the temperature rises and the peak of the radiation band becomes shorter. You enjoy not the far infrared rays but the infrared rays, and the infrared rays radiated by the human body. The band does not match; the other is its red visible glare, which is not good for the eyes. So in terms of finishing, the sheet is better. However, there are also good and bad points in the film package. Its emissivity and electromagnetic radiation are the criteria for judging the pros and cons. In the end, the latter two should be the same, but the last name is more fancy. As long as the infrared light is used as the heat source to heat the far-infrared heating plate or the full-spectrum infrared heating plate, other energy houses, spectrum houses, steaming rooms, biological waves and the like are basically various names.