90 mins fire rated school public door

To maintain GH Door to satisfy well a wide range of market needs, it has paved toward to the world since 2005, and began be tested and authorized by professional fire rated Institute such as WHI (Intertek/Warnock Hersey Inc.) , UL.(Underwriters Laboratories) and FM Global. (Factory Mutual Insurance Company), with 20mins, 45mins,90mins, and 180min fire rating certification. With knowledgeable and experienced personnel continually striving for innovation and advancement, GH Doors are paving the way for the future of the door industry.