Guangdong Derki Doors & Windows Technology Co., Ltd. holds over 100 national technology patents, including our proprietary Four-Side Six-Point Lock invention. Our entry doors are engineered, tested, and certified to meet international building codes across North America, Europe, Australia, and the Middle East.
Engineered to withstand extreme structural wind pressure and driving torrential rain. Rated at AS2047 N6—the highest performance classification for structural integrity, water resistance, and air infiltration.
Conforms to EU Construction Products Regulation (CPR) and EN 14351-1 harmonized standards, guaranteeing mechanical endurance, health safety, and acoustic performance for European engineering projects.
Underwriters Laboratories (UL) fire-rated door assemblies designed for high-end residential entrances, hotel lobby pivot doors, and high-traffic commercial sector submittals requiring fire containment.
Certified factory quality management covering every stage of manufacturing across our 180,000 m² facility—from raw aluminum alloy extrusion inspection to CNC machining, welding, and surface treatment.
Evaluated for Thermal Transmittance (U-Factor), Solar Heat Gain Coefficient (SHGC), and Visible Transmittance (VT) to comply with green building regulations and energy-efficient project standards.
Tested for Canadian Standards Association (CSA) compliance and high-velocity hurricane zones (HVHZ), utilizing laminated safety glass and reinforced aluminum profiles to resist severe storm impacts.
At Guangdong Derki Doors & Windows Technology Co., Ltd., compliance is rooted in true manufacturing expertise. With 25+ years of focus in Foshan, China, our R&D engineering team has engineered breakthrough security features, such as the patented Four-Side Six-Point Lock system that secures entry doors along all four frame edges.
We supply complete technical submittal packages for architects, general contractors, and overseas importers. Every custom order is supported by free CAD shop drawings, glass specifications, hardware performance data, and official laboratory test certificates to ensure instant sign-off by local building authorities.
Key details regarding test documentation, local building code compliance, and structural submittals for international buyers.
Yes. Guangdong Derki Doors & Windows Technology Co., Ltd. supplies complete test documentation including AS2047, CE marking, UL fire rating reports, and ISO 9001 certificates alongside your door schedule submittals.
Our aluminum alloy and stainless steel entry doors are tested to AS2047 N6 standards and hurricane-impact specifications, providing excellent resistance against coastal wind pressure, saltwater spray, and moisture.
This anti-theft locking system is an exclusive invention patent held by Guangdong Derki Doors & Windows Technology Co., Ltd. It engages multi-point locking rods across top, bottom, and side frame profiles to maximize forced-entry resistance.
Yes. Every project receives detailed CAD shop drawings outlining dimensions, profile cross-sections, glass build-ups, sealings, and lock hardware for your engineering approval prior to production.
Send your project schedule or drawings to our engineering team to receive detailed test reports, product specifications, and free CAD drawings.