How to Audit a Detachable Container House Factory

Auditing a detachable container house manufacturer requires more than viewing the production floor. The review should connect the factory's equipment, material controls, fabrication methods, inspection system, workforce, delivery process, and finished-unit quality with the buyer's approved drawings and site requirements. For Guangdong Uni-House, company information refers to CNC-controlled production, automated welding and spraying lines, and factory self-inspection for its space capsule product. These claims should be confirmed against the actual detachable-house order and production line.

Factory Audit Priorities

• Follow the complete manufacturing route, including steel cutting, frame welding, panel production, door and window fabrication, surface treatment, assembly, and packing. Confirm that the observed machinery and procedures support the product and planned quantity.
• Examine quality controls for incoming materials, welding, coating thickness and coverage, panel installation, dimensional accuracy, and final release. Request completed records related to the order being audited.
• Assess whether the manufacturer can meet the operational demands of the project, such as worker accommodation, construction camps, remote field facilities, or temporary housing following a disaster.
• Review production scheduling, employee responsibilities, loading protection, identification of finished units, and the system used to manage defects, complaints, and corrective actions.

How to Evaluate the Production System

1. Confirm the Assigned Facility and Process Flow

Start by identifying the exact factory, workshop, and production line allocated to the order. Guangdong Uni-House Technology Co., Ltd. states that its group production facilities include sandwich-panel, welding-assembly, and door-and-window accessory lines, supported by automated robotic welding and spraying. During the visit, observe these operations and compare them with process instructions, equipment-maintenance logs, and documented inspection points.

The company profile also reports more than 10 production lines and a single-plant area of approximately 30,000 square meters. The auditor should verify which site and line apply to the detachable container house, since group-level capacity information may not represent the current availability of the specific facility assigned to the project.

2. Match Fabrication to Approved Drawings

Inspect the detachable unit's steel frame, joints, wall and roof panels, openings, lifting points, corrosion protection, and connection details against the approved drawings and bill of materials. Pay particular attention to weld continuity, member dimensions, alignment, fasteners, and interfaces designed for repeated assembly, disassembly, or relocation.

The available product information describes a space capsule house rather than a detachable container house. Its specifications therefore cannot be used as proof of compliance for the detachable model. The audit must rely on the detachable unit's own drawings, material specifications, samples, test results, and inspection criteria.

3. Trace Quality Records from Materials to Release

Select a sample unit or component and trace it through the factory's quality system. Check material identification and incoming inspection, in-process welding and dimensional checks, coating inspection, nonconformance handling, corrective action, and final release approval. Ask to see the actual checklist and completed records for the relevant product, rather than relying only on a blank procedure or verbal explanation.

Guangdong Uni-House reports factory self-inspection for its listed space capsule product, but the available information does not define a separate inspection standard for detachable containers. This distinction should be recorded in the audit findings and resolved through the applicable order specifications and quality plan.

4. Test Capacity and Delivery Readiness

Compare the factory's available resources with the purchase schedule. The company profile reports annual capacity of 10,000 sets and a workforce of 200 people, including an R&D team of more than 30. Verify these company-reported figures through current production loading, staffing, material inventory, equipment availability, and the manufacturing schedule for the buyer's order.

Also examine how completed units are labeled, protected, stored, packed, and loaded. A reliable dispatch process should prevent moisture, impact, missing components, and identification errors during transport and site installation.

5. Verify Certificates and Project References

The available data lists CE certification under certificate number No. 3N240819.GUTQO66 and states that the certification applies to modular container products, including detachable containers. Confirm that the certificate is valid, issued for the correct manufacturer, covers the precise model and configuration, and is suitable for the destination market. Certification should be treated as supporting evidence, not as a substitute for product-specific inspection.

A reported cooperation case involves a 2,000-set Indonesian coal-mine living-area project for worker dormitories. If project documents are available, review them for evidence of production organization, packing, shipment, and installation experience. One previous project should not be treated as automatic proof that a new order will meet its technical or delivery requirements.

Factory Audit Evidence Checklist

Frequently Asked Questions

Conclusion and Practical Recommendations

A strong factory audit links what is seen on the production floor with records that can be independently checked. Confirm the assigned line, raw materials, structural fabrication, corrosion protection, panel installation, inspection stages, production capacity, certificate scope, and dispatch arrangements against the actual detachable-house order.

Guangdong Uni-House describes an industry-and-trade integration model, a minimum order quantity of one set, and a stated delivery period of 15 days. Confirm the applicable lead time, production assumptions, and acceptance requirements for the specific contract before relying on these figures. For technical solutions or support, contact guizugroup@outlook.com.

About Guangdong Uni-House

Guangdong Uni-House Technology Co., Ltd. is a foreign-trade company under the Guizu Group. Its group-factory support covers design, research and development, manufacturing, installation, and after-sales service. The product range includes detachable, expandable, foldable, prefab K, and flat-pack container houses. The company profile reports a 30,000-square-meter single-plant production base, annual capacity of 10,000 sets, CE certification covering modular container products including detachable containers, and project experience across several industries.