It is mainly used in annealing protective gas, sintering protective gas, nitriding treatment, furnace cleaning and purging gas. It is suitable for heat treatment, bright annealing, protective heating, powder metallurgy, copper and aluminum processing, magnetic material sintering, precious metal processing, bearing production and other fields. Stable and reliable equipment operation, thoughtful and appropriate fast service ensure the continuity of the user's technology and the excellence of product quality, so as to achieve the highest economic benefits for users.