Ductless hoods are designed to protect the user and the environment from hazardous vapors generated on the work surface.

The ductless fume hoods product line is the innovative Filtration Technology that creates a safe work environment over the widest range of applications in chemical engineering,

petrochemical engineering,petrochemical engineering,medicine,hospital,scientific and research college&university fields.

When fume hood works normally negative pressure forms in the cabinet to absorb toxic,

harmful gas and power to the top of its filtration device .So as to purity air in the cabinet,

and the laboratory constantly and efficiently environmental protection.