Full-chain quality assurance system
The "Triple Protection Net" of state-owned enterprise standards
Relying on the background of Hunan Construction Investment state-owned enterprises, we have established a quality assurance system of "standard first, strict process control, and authoritative certification", and the key indicators are better than the industry standard by more than 30%.
Standard first: Build industry-leading technical specifications
Enterprise standards are higher than national standards: 12 enterprise standards such as "Modular Building Production and Manufacturing Standards" and "Technical Regulations for Modular Connection Joints" have been formulated, including:
Component size deviation
The wall panel is controlled within ±2.7mm (national standard ±3mm), and the floor slab deviation is ≤2.9mm (national standard ±3mm);
Thickness of the rebar protective layer
The deviation between the measured value and the design value is ≤ 1.4mm (national standard ≤ 3mm); Waterproof performance: The module splicing is treated with a double-layer waterproof seal, and there is no leakage through the 1-hour high-pressure water spray test (water pressure 0.3MPa).
International standard adaptation
For overseas projects, it also complies with the technical specifications of the target country, such as Indonesian projects meeting SNI (Indonesian National Standards) seismic requirements, and European projects adapting to CE certification standards to ensure the compliance of global projects.
Strict Process Control: “Eight Checkpoints” for Full-Cycle Quality Interception
Establish a comprehensive quality inspection system covering the entire process from raw materials to production, factory release, and construction. Implement a “dual inspection + on-site supervision” approach at critical stages.
Raw Material Entry Control
Steel, plates, and other raw materials must be accompanied by third-party inspection reports. Upon arrival, samples undergo mechanical property testing (e.g., tensile strength, yield strength). Non-compliant materials are immediately rejected, achieving a 100% acceptance rate.
Processing Precision Control
Steel structure welded joints undergo ultrasonic flaw detection with 100% coverage. Grade 1 welds achieve a 99.8% pass rate.
Functional Integration Control
Medical modules undergo airtightness testing (pressure decay ≤1Pa/h), while educational modules undergo formaldehyde emission testing (≤0.05mg/m³). Both undergo third-party re-inspection.
Structural Safety Checkpoint
Modules undergo static load testing (loaded to 1.2 times design capacity) prior to shipment. For example, the socket-type stacked container structure can withstand 300 kg/m² per layer, far exceeding residential requirements.
Factory Acceptance Control
Implements a “three-inspection system” (self-inspection, mutual inspection, specialized inspection). Each module is accompanied by a quality certificate and test report, with production data accessible via QR code scanning.
Logistics Protection Control
Modules utilize custom damage-resistant packaging with impact-resistant corner guards. Securing status is checked every 6 hours during transport.
On-site Installation Control
Node connections are strictly controlled using torque wrenches (tolerance ≤5%). Post-installation leveling and verticality calibration ensures deviations ≤3mm/m.
Completion & Handover Control
Conduct full-load trial operation with owner and supervisor (e.g., 24-hour emergency module power-on test). Issue a Quality Warranty Certificate specifying 5-year structural warranty and 2-year waterproofing warranty.
SERVICES
Authoritative Certification and Proven Track Record: The Solid Foundation of Quality and Reputation
After-sales Support: Full-lifecycle Quality Assurance
Establish a “24-hour global response” service system, with localized technical teams assigned to overseas projects (e.g., service stations in Indonesia and Kyrgyzstan), ensuring fault response times not exceeding 48 hours;
Offer “Digital Twin Operations” services, delivering digital models alongside module handover to monitor structural health and equipment performance data in real time, providing early warnings for potential issues (e.g., steel structure corrosion, pipeline aging).
Implement a “lifetime quality traceability system,” permanently archiving production, inspection, and maintenance records for each module. Our state-owned enterprise background ensures seamless after-sales support without disruption.
Core Competitiveness in Production and Quality: Why Do Global Customers Trust Us?
From millimeter-level precision in smart factories to stringent controls across the entire supply chain, coupled with the accountability of a state-owned enterprise, Zhongxiang Jinlinjia delivers modular building solutions that offer both speed and quality to global clients through a production and quality system that is “visible, verifiable, and assured.”
State-owned enterprise certainty:
As a wholly-owned subsidiary of Hunan Construction Investment Group, backed by a trillion-yuan asset base, we eliminate risks such as “cutting corners or contract breaches.”
Data-driven reliability:
The “Golden Scale Cloud Construction” system enables traceable quality data, delivering greater precision and transparency than traditional manual inspections.
Globally Validated Adaptability:
Projects implemented across over 10 countries, with production and quality control systems tested in diverse environments including high salt fog, extreme heat, and arid conditions.
Standard-Leading Advancement:
Corporate standards exceed national norms, and the company participates in industry regulation development—such as the Hunan Agricultural University project serving as the industry blueprint for modular building approvals and inspections.
Contact us
7th floor, Building 1, No. 568 Queyuan Road, Tianxin District, Changsha City, Hunan Province