Unit conversion: 1MHz = 1000KHZ = 1000 000Hz frequency electromagnetic heating Movement: 20 ~ 25KHz IEEE (International Electrical and Electronics Engineers) set for the range: 1, the magnetic field around from about 0.1MHz to 300MHz frequency range, the resulting magnetic field, the magnetic field strength over 3 gigahertz, which are harmful, 90MHz to 300MHz field hurt the most, and the more up closer hurt smaller field 0.1MHz, 0.1MHz following injury problems to the magnetic field, the more trivial. Of course, its strength in three gigahertz following commercial induction cooker manufacturers to supply the harmful range, generally is regarded as a safe range. Induction cookers also known, in 1957 the first home appliance born in Germany. 1972 factory wholesale commercial induction cooker, the United States began producing cooker, induction cooker early 1980s began selling in Europe, America and Japan. The principle of magnetic induction cooker is heating vortex. Namely the use of electric current produces a magnetic field induction cooker manufacturers through the coil, when the internal magnetic field lines through the bottom of the iron pot cooker manufacturers of commercial channels, the magnetic field lines are cut, resulting in numerous small eddy, make their own high-speed rotating iron pot and iron atoms collide friction heat and direct heating food in the pot. The best commercial induction cooker manufacturers | Commercial Induction forces manufacturers | Katherine letter kitchenware factory, Ltd. Shenzhen trillion letter provided by the kitchen. Shenzhen Katherine letter Kitchenware Co. (www.zxomen.com) strong, credible, in Shenzhen, Guangdong province cooking, baking equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Katherine letter kitchenware manufacturers and you hand into the brilliant, for a better future!