Frequently Asked Questions (FAQ)

Over the past 25+ years, our systems have been specified and installed in more than 18,000 commercial, hospitality, and residential developments across Southeast Asia, North America, Australia, Europe, and the Middle East. Our completed references include internationally recognized hospitality brands such as Hilton and Atour Hotels, luxury coastal villas, and high-density urban condominiums requiring strict compliance with regional building codes.

Guangdong Dejiyoupin Doors and Windows Co., Ltd. provides a complete one-stop envelope solution, including:

• Aluminum Windows: High-compression outward/inward casement windows, tilt-and-turn systems, heavy-duty sliding windows, and expansive structural picture windows.
• Aluminum Doors: Heavy multi-track sliding doors, lift-and-slide patio doors, acoustic bifolding glass walls, commercial swing doors, and luxury pivot entry systems.
• Engineered Sunrooms: Thermally insulated aluminum structures with integrated glass roof drainage and solar heat control.
• Interior Wooden Doors: High-precision acoustic and decorative wooden doors tailored for hospitality suites and luxury apartments.

Yes. Our engineering department designs systems specifically formulated for challenging climatic environments:

• Typhoon & Wind Resistance: Reinforced primary profile cavities engineered to withstand ultimate design wind pressures up to 5,000 Pa, combined with multi-point perimeter locks and impact-resistant laminated glass.
• Water Penetration Defense: Multi-tier EPDM automotive-grade sealing gaskets, concealed cascading drainage tracks, and raised interior threshold dams preventing rainwater backflow under torrential monsoon rains.
• Thermal & Condensation Control: PA66 GF25 polyamide thermal break barriers paired with double or triple insulated Low-E glass units to dramatically lower solar heat gain coefficients (SHGC) and eliminate interior condensation in air-conditioned environments.

To receive an itemized, highly competitive commercial proposal, please provide our engineering office with:

• Architectural elevation drawings, CAD floor plans, or window/door schedules detailing rough opening dimensions and opening configurations.
• Required aluminum profile surface finishes (RAL color codes, super-durable architectural powder coating, fluorocarbon PVDF, or high-micron architectural anodizing).
• Glass performance requirements (single/double/triple glazed, laminated PVB/SGP, Low-E coating positioning, acoustic acoustic interlayer, tinted or reflective tints).
• Hardware specifications (standard multi-point security hardware or specified global hardware brands such as Siegenia, HOPPE, or Roto).

Absolutely. We maintain in-house tooling, extrusion engineering, and mold-development capabilities. For landmark developments or OEM/distributor partners seeking distinct profile designs, narrow sightlines, or specialized structural mullions, we provide 3D rapid prototyping, structural stress simulations, and dedicated die tooling with guaranteed dimensional tolerances.

Our standard production turnaround is 25 to 35 business days following final approved shop drawings and deposit release. For high-volume multi-story developments requiring staggered site deliveries, we coordinate phased production schedules and batch container shipments matched precisely to your project's construction critical path.

We follow an industrial export packaging protocol specifically engineered to withstand rough ocean handling and container transshipment:

• Tier 1: High-tack non-residue electrostatic film over all exposed powder-coated and anodized surfaces.
• Tier 2: Multi-layer thick pearl cotton foam wrap insulating glass and frame components from vibration.
• Tier 3: Rigid composite corner caps preventing edge impact during handling.
• Tier 4: Fully reinforced plywood crates and steel-strapped stillages (ISPM 15 fumigation-free compliant) packed with desiccants. We provide comprehensive 3D container packing schematics to maximize space while ensuring safe crane and forklift offloading on your jobsite.

Products manufactured by Guangdong Dejiyoupin Doors and Windows Co., Ltd. are rigorously tested in certified laboratories. We maintain test reports and compliance certificates across major regional standards:

• North America: NFRC (thermal and solar properties), AAMA/WDMA/CSA 101/I.S.2/A440 structural ratings, Florida Product Approval impact ratings.
• Australia & New Zealand: AS2047 (structural, air infiltration, water resistance) and AS1288 (safety glazing).
• Europe: CE marking compliance according to EN 14351-1.
• Corporate Standards: ISO 9001 certified quality control, ISO 14001 environmental management.

We stand behind our manufacturing excellence with a comprehensive 10-year factory warranty covering aluminum extrusion structural stability, hardware operating performance, and seal integrity. Specialized PVDF architectural coatings carry finish warranties of 15 to 25 years.

Additionally, we provide detailed step-by-step 3D visual installation manuals, video walkthroughs, and direct engineering phone/video support. For prominent commercial towers and hospitality developments, we can dispatch senior factory installation engineers directly to your jobsite to oversee installation procedures and ensure building envelope compliance.