Adopts advanced ceramic fiber furnace chamber; for special products, all-heavy-duty furnace structure can be constructed into circular or square chambers. Heating elements include FeCrAl resistance wires, U-shaped silicon carbide rods, U-shaped silicon molybdenum rods, etc. With a wide temperature control range, it supports various atmospheres, featuring uniform and adjustable gas inlet, adjustable exhaust, multi-zone design as required, easy loading/unloading, energy-saving and environmental protection, fully automatic control of temperature, atmosphere and degumming, convenient maintenance, and long service life.