Understanding the Importance of the Warnock Hersey (WH) Mark in Fire Door Certification and Safety As a trusted fire door manufacturer in China, we at Guangdun Door Industry Co., Ltd. prioritize product safety and performance, ensuring that all our fire doors meet international standards. One of the most prominent certifications that enhances the credibility of […]
Tag Archives: Fire Door Certification
Certification As a leading Chinese fire door manufacturer, Guangdun Door Industry Co., Ltd. is proud to provide fire doors that comply with multiple global standards, including China’s 3C certification, the UL (Underwriters Laboratories) standard, and the WH (Warnock Hersey) certification. These certifications underscore our commitment to safety, quality, and reliability for fire-rated products. Below, we’ll explore these certifications and their relevance […]