Hangzhou Deyu Doors And Windows Co., Ltd. specializes in high-end engineering doors and windows with 25 years of experience, serving commercial real estate with customized solutions from R&D to installation. Covering 2 million sqm, products meet CE, AAMA, and AS2047 standards, featuring energy-saving glass and thermal insulation. Sustainability is prioritized with 68% recycled materials. As one of China's Leading Full-Service Window and Door Supplier for Real Estate, DEYU deeply understands the needs of people. DEYU's comprehensive range of solutions ensures comfortable home living driven by a simple and seamless user experience. DEYU is known for its people-centric home solutions. It has to its credit 27 years of experience and expertise in balancing design and technology to anticipate the needs of people today, and their families for generations to come.
Q: Who are we?
We are a leading high-quality supplier specializing in engineering doors and windows, with 25 years of profound industry experience, rooted in Hangzhou, Zhejiang Province.
Q: Are your slim frame sliding doors certified for energy efficiency and weather resistance?
Yes, our multi-slide patio doors are NFRC-rated (National Fenestration Rating Council) and fully compliant with high energy-efficiency standards. They feature state-of-the-art thermal break aluminum profiles and high-specification fully tempered double/triple glazing (e.g., 5mm+12Ar+5mm) with advanced Low-E coating and insulating argon gas filling. This ensures outstanding thermal insulation, massive energy savings, and excellent acoustic soundproofing.
Q: Can the bottom floor track be completely flush and hidden with our flooring?
Absolutely! We specialize in minimalist architectural aesthetics and offer two advanced threshold track options: Integrated Floor-Insert Track (allowing floor surfaces to be embedded directly for a 100% seamless look) and Flat Aluminum Alloy Cover Plates (providing smooth, barrier-free walkways while preventing dust accumulation).
Q: What is the maximum customizable height and width for these patio doors?
We possess industry-leading structural engineering capabilities and can customize floor-to-ceiling sliding glass walls up to a maximum height of 9 meters (approx. 29.5 feet). The system supports 2-track, 3-track, 4-track, and multi-panel configurations, including 90-degree column-free corner sliding designs and pocket systems.
Q: How do you guarantee security and anti-theft performance with such thin frames?
Security is our top priority. Our ultra-slim slide doors are equipped with premium German-imported heavy-duty multi-point interlocking systems. It utilizes heavy-duty L-shaped mechanical lock hooks that engage seamlessly into hidden catch points within the frames. Together with standard fully tempered safety glass (or optional storm-impact laminated glass), it provides outstanding mechanical resistance against forced entry and excellent wind-load stability.
Q: Can we customize the frame colors and what surface treatment is used?
Yes, we offer 100% custom colors. We use premium AkzoNobel powder coating, which is the world's standard for architectural coatings, supporting any RAL color card (such as Matte Black RAL 9005, Dark Grey RAL 7016, or Pure White RAL 9016). The coating is highly resistant to UV rays, salt spray, and extreme heat, guaranteeing up to 10-20 years of fade-free, weather-resistant, and peel-free service life under outdoor exposures.