A North American mainstream supplier of UL/FM/WHI fully-certified fire doors and frames, delivering tech-driven one-stop safe opening solutions for global buildings.
GH Door Industry was established in 1991, with a 120000 square meter single production base and an annual production capacity of 1 million sets of fireproof doors and door frames. The products include steel fireproof doors/frames, wooden fireproof doors, and whole door systems (with a fire resistance time of 20-180 minutes).
Relying on cutting-edge equipment such as AMADA impact composite center, Weinig six axis machining center, YASKAWA robot welding, and ISO 9001:2015 quality management system, we implement 100% incoming inspection, full process inspection, and finished product fire resistance sampling testing to ensure stable product quality.
As a mainstream supplier in the North American market, the company holds UL/cUL, FM, WH/ITS and other North American core certification, as well as QCDD and SASO certification in the Middle East. Through the Chinese Mainland General Factory and the world sales and storage network in Los Angeles, Vancouver, Montreal and other places, the company has services in 72 countries and 56 overseas distributors.
With the technology roadmap as the core, we continue to deepen our basic research and innovation, from semi-automatic production to intelligent manufacturing, achieving a technological leap from door frame accuracy of ± 0.5mm to robot welding qualification rate of 99.7%, and building a cloud based fire-resistant data center to ensure full lifecycle traceability. By 2025, we will establish a factory in Vancouver, Canada to further deepen our localization layout in North America and strive to provide one-stop safety fire door solutions for buildings worldwide.
The first door frame roll forming line achieves synchronous continuous stamping of door frame and door leaf, with an error of ± 0.5 mm.
Introducing the Japanese AMADA CNC punching folding center with a positioning
accuracy of ± 0.1 mm.
Establish an internal UL 10B combustion test furnace and complete the first 90 minute fire resistance verification of steel doors.
By obtaining the INTERTEK WH and UL/FM triple fire certification, we have become one of the first factories in China to hold both North American dual certifications.
Launch ERP-MES traceability system, with steel plate coil number → finished product serial number fully traceable.
Develop KD (Knock Down) quick installation door frame system, with one person completing on-site assembly in 8 minutes.
6000 automated vertical warehouses have been put into use in Los Angeles, with inventory turnover of ≤ 7 days.
The solid wood fireproof door line has been completed and obtained the UL 90-minute wooden fireproof door certificate.
The Weinig six-axis machining center in Germany has been put into production, with a processing tolerance of ± 0.2mm for wooden frames.
The BIM & REVIT component library has been launched, and the detailed drawings for the North American/Middle East project will be delivered within 48 hours.
The robot welding unit was put into use, with a first-time pass rate of 99.7% for weld seams and a 100% RT pass rate for radiographic testing.
Powder coating + wood grain transfer printing on the same line, single door color change ≤3 minutes.
A cloud-based fire-resistant data center has been established, allowing real-time access to the complete temperature rise curves of all factory door serial numbers within 20 to 180 minutes.
Vancouver, Canada
A global safety science leader founded in 1894, UL (Underwriters Laboratories) tests and certifies products to U.S. and international standards. Its marks—UL and cUL—are accepted across North America.
An international certification body operating since 1897, FM Approvals evaluates fire-protection and industrial products to rigorous loss-prevention standards. The FM mark is recognized worldwide, especially in North America and Europe.
Headquartered in the U.K., Intertek’s Warnock Hersey (WH) mark confirms that building products meet U.S. and Canadian fire, life-safety, and performance criteria. ITS is one of the largest testing, inspection, and certification networks globally.
