QUALITY
QUALITY CONTROL
Exceptional Quality, Rooted in Consistent Precision Control
At Zhonglian Demi, we understand that a large-scale solid waste treatment production line is not merely a collection of equipment, but a core system critical to long-term stable operation, resource recovery efficiency, and return on investment. Therefore, we integrate our “end-to-end, zero-defect” quality control philosophy into every stage from design to delivery, ensuring that what we deliver to you is not just components, but a reliable solution that continuously creates value.
Preventive Controls During the Design Phase
Quality begins with the blueprint.
Our engineering team employs standardized, modular design and utilizes advanced dynamic simulation to mitigate potential structural risks and performance bottlenecks at the design stage, ensuring optimal reliability, maintainability, and energy efficiency.
Supply Chain and Incoming Material Control
Core Supplier Network
We have established long-term strategic partnerships with leading domestic and international suppliers of motors, bearings, electrical components, and specialty steels, guaranteeing the exceptional quality of base materials from the source.
Strict Incoming Quality Control (IQC)
All critical purchased components and raw materials must pass our IQC inspection, including material certificate verification, dimensional accuracy testing, and performance sampling tests, to prevent non-conforming items from entering the production line.
Precision Control of the Manufacturing Process
Pre-Assembly and Comprehensive Pre-Shipment Testing
Segmental Pre-Assembly
For complex screening and sorting modules, pre-assembly is conducted in-house prior to shipment to verify dimensional fit and mechanical operation smoothness, identifying and resolving issues in advance.
No-Load and Load Testing
Key equipment (such as crushers, sorters, and trommel screens) undergoes no-load test runs prior to shipment to monitor critical parameters such as vibration and noise. Simulated load testing for certain core equipment can be conducted upon customer request.
Electrical Control System Simulation Testing
The PLC control system undergoes full-process logic simulation testing prior to shipment to ensure software stability, user-friendly interfaces, and error-free interlocking.
Standardized On-Site Installation and Commissioning
Professional On-Site Team
We dispatch a field commissioning team comprising experienced project managers, mechanical engineers, and electrical engineers to execute standardized installation guidelines.
Phased Commissioning and Acceptance
We follow a rigorous process: “Single-unit commissioning → Interlocking commissioning → Trial operation with material.” During the trial run with actual materials, we will work with your team to verify the system’s actual processing capacity, sorting accuracy, energy consumption metrics, and other parameters to ensure that the technical performance meets or exceeds the contractual specifications.
Continuous Quality Traceability and Improvement
We establish a lifetime quality file for each production line, recording key data ranging from major component serial numbers to every service visit, to achieve full lifecycle quality traceability.
We view issues encountered during trial operation and the after-sales phase as invaluable opportunities for improvement. We systematically analyze and feed this feedback back into the design and manufacturing processes, driving continuous product iteration and optimization.
Supply Chain and Incoming Material Control
We deliver more than just a production line; we provide the assurance of long-term, stable operation and the cornerstone of your project’s success. Choosing Zhonglian Demi means choosing a commitment to quality and a steadfast dedication to our promises.
