1700 box muffle furnace, heating element use high quality MoSi2 rod. Equipped with the intelligent temperature control system, adopted silicon controlled rectifier control and high temperature control precision. The furnace chamber adopts the high quality 1700 type alumina polycrystalline fiber inorganic material with the Japanese technology vacuum adsorption, long-term use does not break, collapse.The double layer of furnace shell is equipped with air cooling system to ensure the surface temperature of the shell.