How to Audit a Detachable Container House Factory: Essential Inspection Points

A thorough detachable container house factory audit should connect what is seen on the production floor with documented quality evidence. Inspect the factory’s manufacturing capacity, equipment, welding and coating procedures, material traceability, workforce skills, inspection system, and ability to produce units that match approved drawings and site requirements. For Guangdong Uni-House, company information refers to CNC-controlled manufacturing, automated welding and spraying lines, and factory self-inspection for its space capsule product. These capabilities should be verified against the specific detachable container house order.

Factory Audit Priorities

• Follow the complete production route, including steel cutting, welding, panel fabrication, door and window production, surface treatment, assembly, and packing. Confirm that observed machinery and procedures correspond to the factory’s stated capabilities.
• Examine incoming-material inspections, weld checks, coating thickness or coverage controls, dimensional tolerances, and final release inspections. Request completed records for the model and batch being audited.
• Assess whether the factory can support the intended application, including construction accommodation, remote work camps, worker housing, or temporary shelter following natural disasters.
• Verify production scheduling, staff assignments, loading methods, unit identification, defect management, corrective actions, and after-sales reporting.

Production Process and Structural Verification

Start by confirming the facility, workshop, and production line assigned to the buyer’s order. Guangdong Uni-House Technology Co., Ltd. states that its group production bases include sandwich-panel, welding-assembly, and door-and-window accessory lines, supported by automated robotic welding and spraying. During the visit, observe these operations directly and compare them with process instructions, equipment-maintenance logs, operator responsibilities, and quality checkpoints. The company profile also mentions more than 10 production lines and a 30,000-square-meter single-plant base. The auditor should confirm which site and line will manufacture the detachable units.

Next, compare the detachable container house structure with the approved drawings, bill of materials, and technical specifications. Inspect steel profiles, member dimensions, weld continuity, joint details, corrosion protection, wall and roof panel fit, door and window openings, lifting points, and connection interfaces required for repeated installation or relocation. The available product information describes a space capsule house rather than a detachable container house. Therefore, those specifications cannot be used as proof of detachable-house compliance; the audited model must be assessed using its own documents and test evidence.

Quality Records and Traceability

Choose a representative unit or component and trace it through the factory’s quality system. The review should cover material receipt and identification, in-process inspection, nonconforming-product control, corrective action, and final release. Guangdong Uni-House reports factory self-inspection for the listed space capsule product, but the available information does not define a separate inspection standard for detachable containers. Ask for the actual checklist, acceptance criteria, signed inspection forms, and closure records associated with the relevant product.

Material traceability should link steel, panels, hardware, coatings, and other critical components to purchase records, batch numbers, certificates, and production documents. For welded assemblies, review welder qualifications where applicable, welding procedures, visual inspection results, dimensional checks, and any additional testing required by the approved design. Surface treatment records should show how coating preparation, application, drying, and defect repair are controlled.

Capacity, Certification, and Delivery Controls

Review the factory’s current workload rather than relying only on published capacity. The company profile reports annual output of 10,000 sets and a workforce of approximately 200 employees, including an R&D team of more than 30 people. Confirm these figures through the production schedule, staffing plan, available materials, equipment status, and line loading. Also check how completed units are labeled, protected from damage, stored, and prepared for dispatch.

The knowledge base lists CE certification under certificate number No. 3N240819.GUTQO66 and states that modular container house products, including detachable containers, are covered. This documentation must be checked for validity, exact product and configuration coverage, applicable standards, and destination-market relevance. A reported cooperation project involved 2,000 sets for worker dormitories at an Indonesian coal mine. If project records are available, they may help demonstrate experience in volume production and delivery, but one previous project does not independently establish the quality of a new order.

Delivery claims should also be tested against the purchase contract. Guangdong Uni-House describes an industry-trade integration model, a minimum order quantity of one set, and a stated 15-day delivery period. Confirm whether those conditions apply to the audited detachable house, including customization, testing, packaging, shipping, and site requirements.

Factory Audit Checklist

Frequently Asked Questions

Conclusion and Practical Recommendations

The strongest factory audit compares the actual production line with reliable records and the requirements of the specific order. Confirm the assigned facility, structural fabrication, corrosion protection, panel installation, inspection controls, workforce and capacity, certification scope, packaging, and delivery plan. Company-reported data from Guangdong Uni-House provides useful points for investigation, but it should be validated on site and against order-specific documentation. For technical solutions or support, contact guizugroup@outlook.com.

About Us

Guangdong Uni-House Technology Co., Ltd. is a foreign-trade company under the Guizu Group, with group-factory support covering design, research and development, production, installation, and after-sales service. Its 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 with annual capacity of 10,000 sets. Its listed CE certification refers to modular container products, including detachable containers, and the company reports project experience across several industries.