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

1. Door & window materials: Broken bridge aluminum windows / UPVC windows, aluminum alloy swing doors, security doors, glass sliding doors

2. Glass: Single tempered glass / Double insulated tempered glass (heat insulation & soundproof), Low-E glass

3. Accessories: Insect screens, security grilles, external sunshade blinds, external rolling shutters, porch canopy, escape window

4. 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)

1. Power distribution: GB / EU standard sockets, distribution box, residual current circuit breaker, LED lighting, emergency lights

2. Wiring: Concealed wiring (pre-embedded inside wall) / Exposed wiring; upgraded flame-retardant fire-resistant cables

3. Water supply & drainage: PPR cold & hot water pipes, sewage pipes, floor drain, wash basin, toilet (seat / squat), shower set

4. 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)

1. Upgraded reinforced folding hinges, heavy-duty latches, external support braces (load bearing after expansion)

2. Roof upgrade: PVDF waterproof membrane, asphalt waterproof roll, metal roofing, roof gutter & downpipes

3. Anti-corrosion upgrade: Hot-dip galvanized components, PVDF spray coating; chassis anti-corrosion & anti-rust coating

4. Lightning protection earthing kit, seismic reinforcement fittings

7. External Expansion & Supporting Facilities

1. Outdoor platform / Accessibility ramp, external steel staircase, handrail

2. External storage cabin, retractable awning, terrace guardrail

3. 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