... the cast copper heating board is fast heating-raising, heating evenly, high thermal efficiency, long span life... Cast copper heating board.size:190 ... advantages. Use: for plastics, rubber, machinery and so on heating extruders in the industry. Description: 1). Voltage rating can not ... 10%. 2). Wiring put on the part of the floor heating, the shell should be effectively grounded. 3). Element should ...