... 5.ISO9001:2008 Products: various kinds of heating elements, heating chamber, hearth, heating tube, bracket, joint board, graphite adjusting plate ... tie-in of conducting rod, graphite heater, graphite insulated chamber, graphite tray, graphite box for sintering, graphite plate,heater ... environment and 3000 degree in the deoxidize and insert gas environment. It has uniformity of heating structure, good ...