Main Structure
- Materials: Multi-layer composite armor (high-strength steel + carbon fiber + explosion-proof concrete). Wall thickness: 300–600 mm, compressive strength ≥ C60 grade concrete.
- Seismic Resistance: Rated for above magnitude-9 earthquakes. Integrally poured seamless walls with reinforced steel frame structure.
- Burial Depth: 3–6 m for household cabins; 10–30 m for premium bunkers; over 50 m for large complexes.
2.2 Protection Ratings
- Blast Resistance: Withstand shock waves of 75 PSI (approx. 5 atmospheres), resistant to near explosions of conventional ordnance.
- Airtight & Chemical Protection: Triple airtight blast doors + gas filtration ventilation system. Internal positive pressure ≥ 50 Pa to block nuclear fallout, toxic gas and biological contaminants.
- Radiation Shielding: Lead plate / barium sulfate composite layers with customizable lead equivalent to shield gamma rays and neutron radiation.
3. Life Support Systems
3.1 Air Circulation System
Military-grade activated carbon & HEPA filters remove 99% of toxic fumes and nuclear dust, with three operating modes: fresh air, gas filtration and internal recirculation.
Independent oxygen generators and positive pressure fresh air supply. Per capita fresh air volume ≥ 30 m³/h. Constant temperature: 20–22°C, relative humidity: 40%–60%.
3.2 Water System
Food-grade anti-leak water tanks with capacity of 10–50 tons. Equipped with reverse osmosis & UV sterilization devices, daily water purification capacity up to 45,000 liters.
Rainwater collection and sewage recycling system, with a closed-loop water reuse rate above 90%.
3.3 Power Supply System
- Primary Power: Photovoltaic power + energy storage batteries (300–1000 kWh), continuous power supply for 7–30 days.
- Backup Power: Redundant diesel/gas generators installed in independent noise-reducing and explosion-proof rooms.
3.4 Survival Supplies
Long-shelf-life rations including compressed food, canned goods and freeze-dried meals (shelf life: 5–20 years). Hydroponic/aeroponic planting areas for fresh vegetables and fruits.
Full set of first-aid supplies, medical-grade purification units and telemedicine terminals.
4. Spatial Layout (Modular Customization)
- Entrance Area: Multi-layer heavy-duty airtight blast doors (single door weight: 5–7 tons), decontamination passages and buffer zones.
- Living Quarters: Bedrooms, kitchen, dining room and restrooms with standard residential comfort.
- Equipment Room: Independent compartments for air purification, energy storage, power generation and water treatment to avoid interference.
- Storage Area: Constant-temperature & humidity storage for food, water, medicine and protective gear.
- Functional Zones (Premium Models): Command room, communication room, medical room and recreation area.
5. Product Classification & Price Range (2026 China Market)
| Type |
Floor Area |
Self-sustainability Period |
Price (CNY) |
| Household Safety Cabin |
10–50 ㎡ |
7–30 days |
300,000 – 2,000,000 |
| Small Underground Bunker |
50–200 ㎡ |
3–12 months |
2,000,000 – 8,000,000 |
| Custom Premium Bunker |
200–500 ㎡ |
1–5 years |
8,000,000 – 30,000,000 |
| Large Survival Complex |
≥1000 ㎡ |
Over 5 years |
Starting from 50,000,000 |
6. Core Technical Advantages
- Composite Protective Materials: Self-developed and mass-produced materials featuring high strength, light weight, radiation resistance and high temperature resistance.
- Closed-loop Life Support System: Fully recycled air, water, food and energy systems to minimize external reliance, the core of long-term self-sustainability.
- Intelligent Integrated Control: AI system monitors environmental indicators, equipment status and inventory, supporting early warning and automatic emergency response.
7. China Market Overview
- Policies: Classified as civil air defense facilities. Multiple regions approve the construction of private underground safety facilities and encourage the development of emergency response industry.
- Major Manufacturers: Domestic suppliers focus on modular design and customized solutions with cost-effective products.
- Market Trend: Products evolve from extreme survival shelters to dual-scenario facilities for daily emergency use + disaster evacuation. Miniaturization, intelligence and affordability become the mainstream development direction.
