National Heaters established in 1990, began with manufacturing of one product, the mica band heaters. Since the national heaters has expanded our product lie to include cartridge, air process, band, ceramic, mica, sealed, air heaters, heating elements tubular etc., we are dedicated to those design and manufacturing of resistance heating for a variety of OEM, industrial, medical, commercial and military applications etc. In addition, we can supply compatible accessory items, which enable us to offer a complete heater system.