Manufactured by Guangdong Dejiyoupin Doors and Windows Co., Ltd., our bifold doors combine structural European 6063-T6 aluminum alloys, precision thermal breaks, stainless steel multi-wheel carriage tracks, and German multi-point locking systems. Designed to achieve superior weather tightness, sound isolation, and energy efficiency aligned with EN 14351-1 requirements.
Heavy-Duty Heavy-duty thermal break bifold system tailored for luxury terrace entries, verandas, and panoramic garden portals.
Energy Saver High-performance insulation folding system built to satisfy European low-energy house standards including German GEG and French RE2020.
Ultra-Span Robust architectural profile engineered for heavy glazed panels up to 3500mm in height and leaf weights reaching 150 kg per sash.
Guangdong Dejiyoupin Doors and Windows Co., Ltd. supplies high-precision, factory-direct aluminum bifold doors to distributors, building developers, and façade specialists across the UK, Germany, France, Italy, and Scandinavia. Each system is custom-manufactured to ensure long-term structural integrity and compliant thermal envelopes.
Multi-chambered profiles filled with high-density polyamides and argon-filled Low-E glazed units eliminate cold bridging and reduce condensation.
Equipped with shoot-bolt locks, tamper-proof hinges, internal glazing beads, and patented multi-point locking mechanisms meeting RC2/RC3 security levels.
Continuous co-extruded EPDM weather gaskets and integrated drainage channels safeguard against harsh driving rain and Atlantic coastal gale winds.
| System Model | Profile Depth | Thermal Break Strip | Glazing Option | Max Sash Dimensions | Hardware Configuration |
|---|---|---|---|---|---|
| DERCHI 80 Bifold | 80 mm | PA66 GF25 24mm | 28mm / 32mm Double / Triple | 1200mm (W) × 3000mm (H) | Heavy-duty bottom roller, concealed hinges |
| DERCHI 78 Insulated | 78 mm | PA66 GF25 34mm High Insulation | 36mm / 42mm Triple Low-E | 1000mm (W) × 2800mm (H) | German multi-point lock with flush lever |
| DERCHI 93 Architectural | 93 mm | Multi-Cavity Reinforced Thermal Strip | Up to 50mm Acoustic / Bulletproof | 1300mm (W) × 3500mm (H) | Stainless carriage system (max 150kg/leaf) |
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