Established in 2014, Grandex Door Solutions Co., Ltd. is a premier entry door manufacturer operating from a modern 35,000 m² facility. With 16 years of industry expertise and 8 years of dedicated export experience, the company generates an annual export revenue of USD 28 million. Grounded in strong OEM and ODM trade backgrounds, our products primarily serve North America and Western Europe, supported by a network of over 1,200 supply chain partners. We cater to leading building material distributors, real estate developers, and commercial contractors. Quality is integral to our operations: supported by strict ISO 9001 certified internal testing and third-party laboratory verification, our 45-member QA team ensures rigorous quality control throughout production. Driven by an active R&D division with 85 specialized engineers, we introduced 120 new door designs last year and offer full custom solutions spanning custom dimensions, security locks, surface finishes, and decorative glass panels.
Send Inquiry NowTokyo’s high-density environment requires superior acoustic insulation and wind-load resistance. Our windows are engineered to exceed JIS (Japanese Industrial Standards) for seismic safety.
Tilt-before-turn mechanisms provide secure ventilation while maintaining high airtightness, essential for Tokyo's humid summers and efficient climate control systems.
Our 1,200+ partner network ensures just-in-time delivery for Tokyo development projects, balancing Chinese production efficiency with Japanese quality expectations.
As Tokyo embraces "ZEB" (Net Zero Energy Building) standards, our R&D team is pioneering high-performance thermal break profiles that minimize energy loss. By integrating AI-driven intelligent sorting and CNC precision, we ensure every unit meets the stringent Tokyo building code requirements.
Grandex Door