The brand Guanbang Doors and Windows is currently highly recognized in the industry. Guanbang Doors and Windows adheres to the product development concept of "Safety and Practical, Technology Guanbang" and has established industry-leading door and window R&D experiments. The center has dozens of practical invention patents for aluminum alloy doors and windows, and has passed ISO9001 quality system certification, EU CE certification and IPMS intellectual property management system certification. The industry has high visibility and wide influence. So joining is more reliable.