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About Us

Patent certificates


We have applied for 103 ventilation patents, 75 of which have been authorized

A Louver Fixed to the Air Vent of Passenger Ship

A Louver Fixed to the Air Vent of Passenger Ship

An Air Duct Fixing Device

An Air Duct Fixing Device

A Plenum Chamber Air Duct End Device

A Plenum Chamber Air Duct End Device

An Aluminum Alloy Support and Air Duct Support Anticorrosion Fixing Structure

An Aluminum Alloy Support and Air Duct Support Anticorrosion Fixing Structure

A Water Mist Separator Anticorrosion Fixed Installation Structure

A Water Mist Separator Anticorrosion Fixed Installation Structure

A Thermal Insulating Air Duct Cabin Going-through Part

A Thermal Insulating Air Duct Cabin Going-through Part

A Horizontally-installed Louver with a Guiding Gutter

A Horizontally-installed Louver with a Guiding Gutter

System certificates


Quality Management System Certificate

Quality Management System Certificate

Occupational Health and Safety Management System Certificate

Occupational Health and Safety Management System Certificate