1. Requirement Communication & Design Planning​

• •​Requirement Collection:​​ Our professional team conducts in-depth discussions with clients to understand the intended purpose of the customized underground bunker. For private shelters, we assess factors such as family size and expected duration of stay to determine space requirements and supply storage needs. For commercial storage, we evaluate the type, quantity, and storage conditions of items. Client preferences regarding location, exterior style, and interior layout are also gathered.
• •​Site Survey:​​ Technicians conduct on-site inspections to measure land area, terrain, soil conditions, and assess load-bearing capacity, groundwater levels, and potential geological risks. This ensures suitability for construction and provides accurate data for design.
• •​Design Proposal:​​ Based on client needs and survey results, our design team uses advanced software to create a preliminary plan, including layout (living areas, storage zones, security sections), structural design (reinforced concrete or steel framework), and critical systems (ventilation, drainage, power supply). Safety, functionality, comfort, and cost efficiency are prioritized. The design is refined through client feedback until final approval.

​2. Material Procurement & Construction Preparation​

• •​Material Sourcing:​​ A detailed procurement list is prepared, specifying material types, specifications, quantities, and quality standards. Reputable suppliers are selected, with strict quality checks on key materials (e.g., steel, concrete, blast doors) to meet safety regulations.
• •​Team Assembly:​​ A skilled construction team (project managers, engineers, workers) with underground engineering expertise is formed. Safety training and technical briefings ensure adherence to plans and protocols. A phased schedule with quality control measures is established.
• •​Site Preparation:​​ The area is cleared, leveled, and marked for bunker boundaries. Temporary facilities (workspaces, material storage, mixing stations) are set up, and utilities (water, power) are connected.

​3. Construction & Quality Control​

• •​Foundation Work:​​ Excavation follows design specs, with stabilization measures (e.g., shoring) for safety. Concrete mixtures, pouring rates, and compaction are strictly monitored to ensure durability. Curing is applied until design strength is achieved.
• •​Structural Build:​​ For reinforced concrete structures, rebar installation, formwork, and concrete pouring are executed; steel structures involve fabrication, assembly, and welding. Quality checks (e.g., weld integrity, concrete density) are performed at each stage before proceeding.
• •​System Installation & Finishing:​​ Ventilation (airflow), drainage (flood prevention), power (backup generators), and fire safety systems are installed. Interior finishes (walls, flooring, ceilings) and fittings (doors, furniture) enhance comfort and aesthetics.
• •​Quality Assurance:​​ A real-time monitoring system tracks progress. Inspectors conduct visual checks, sampling, and non-destructive testing. Third-party audits verify compliance with design and industry standards.

​4. Handover & After-Sales Service​

• •​Inspection:​​ A comprehensive review covers construction quality, system functionality, and safety. Issues are rectified before certification.
• •​Delivery:​​ Clients receive as-built documents (blueprints, logs, test reports) and operational training (usage, maintenance).
• •​Support:​​ Post-sale services include regular check-ups, a dedicated hotline, and warranty-covered repairs. Upgrades are offered based on technological advancements or client needs.