... quickly, 5-20/min generally, electricity saving, time saving, energy saving for over 50%. High-temperature Box Resistance FurnaceFeaturesMaterial and structure of chamber: ... temperature rises quickly, 5-20/min generally, electricity saving, time saving, energy saving for over 50%.High accuracy of temperature control: ... ±6±13817E18KW380V17001650500×250×300±6±1 High-temperature Box Resistance Furnace