Official classification context
Industry overview This class comprises establishments principally engaged in manufacturing industrial furnaces and ovens (combustion furnaces) that use petroleum, coal, gas and other fuels as their heat sources. However, establishments principally engaged in manufacturing electric furnaces or electrothermal equipment that use electricity as their heat source are classified under Major group 29 [2923].
Major group context MACHINERY This Major group comprises establishments engaged in the manufacture of machinery which is in use incorporated in or attached to machinery for general purpose. The establishment engaged in manufacture of device to be attached to information and communication electronics equipment are classified in the Major group 30 -- Manufacture of information and communication electronics equipment, and those engaged in manufacturing electronics parts, device, circuit are classified in the Major group 28 -- Manufacture of electronics part, device and electronics circuit. Group Class Number Number