Optional Accessories for Double-Wing Expandable Prefab House
The main body is standard double-wing foldable prefab house. All items below are optional, can be quoted separately for customer selection
1. Door & Window System Options
Door & window materials: Broken bridge aluminum windows / UPVC windows, aluminum alloy swing doors, security doors, glass sliding doors
Glass: Single tempered glass / Double insulated tempered glass (heat insulation & soundproof), Low-E glass
Accessories: Insect screens, security grilles, external sunshade blinds, external rolling shutters, porch canopy, escape window
Locks: Standard lock, fingerprint password lock, split anti-theft lock
2. Interior & Exterior Cladding and Insulation Options
Exterior Wall
Color steel panel, metal carved panel, PVC siding, PVDF coated wall panel, cement fiber board
Interior Wall
Standard PVC wall panel, bamboo-wood fiber panel, fire-resistant magnesium oxide board, gypsum board with latex paint
Insulation Layer (Core optional item for export)
EPS, Rock wool (Class A fireproof), PU foam; available thickness: 50/75/100mm
Floor
Cement fiber base board + PVC vinyl flooring, engineered wood flooring, anti-slip checkered steel plate, ceramic tile; floor waterproof coating
3. Water, Drainage & Electrical Options (High-frequency export options)
Power distribution: GB / EU standard sockets, distribution box, residual current circuit breaker, LED lighting, emergency lights
Wiring: Concealed wiring (pre-embedded inside wall) / Exposed wiring; upgraded flame-retardant fire-resistant cables
Water supply & drainage: PPR cold & hot water pipes, sewage pipes, floor drain, wash basin, toilet (seat / squat), shower set
Full PV & energy storage package (key product line): Monocrystalline solar panels, LiFePO4 battery, pure sine wave off-grid inverter, controller, solar bracket
4. HVAC Options
Wall-mounted air conditioner, cooling & heating integrated unit; electric heater, underfloor heating module; fresh air system, exhaust fan, ventilation fan
5. Bathroom Module Options (Pre-installed independent bathroom kit)
Integrated shower room, waterproof base tray, bathroom cabinet, mirror, water heater (electric / air source), waterproof threshold
6. Structural & Safety Options (Exclusive for double-wing foldable house)
Upgraded reinforced folding hinges, heavy-duty latches, external support braces (load bearing after expansion)
Roof upgrade: PVDF waterproof membrane, asphalt waterproof roll, metal roofing, roof gutter & downpipes
Anti-corrosion upgrade: Hot-dip galvanized components, PVDF spray coating; chassis anti-corrosion & anti-rust coating
Lightning protection earthing kit, seismic reinforcement fittings
7. External Expansion & Supporting Facilities
Outdoor platform / Accessibility ramp, external steel staircase, handrail
External storage cabin, retractable awning, terrace guardrail
Reinforced lifting lugs, manual / hydraulic adjustable leveling legs
8. Smart System Options (For high-end clients, camps & homestay projects)
Whole house smart system: door & window sensors, motion sensor lights, smoke detector, gas detector, WIFI gateway, reserved interface for surveillance camera
9. Certification & Packing Options
Sea freight reinforcement package, protective film, shipping marking, technical drawing documents



