Quality Control - From Raw Materials to Finished Machines, We Ensure Every Packaging System Meets High Standards
At Wenzhou Haiyi Machinery Co., Ltd., quality is our commitment. From design and component sourcing to assembly and shipment, we ensure every packaging machine is reliable, efficient, and built to last.
Strict Raw Material Selection & Inspection
All structural materials, mechanical components, and electrical parts are carefully selected from qualified suppliers.
Key controls include:
Structural Materials: Stainless steel and carbon steel materials are inspected for thickness, flatness, and corrosion resistance.
Mechanical Components: Bearings, motors, pneumatic parts, and transmission systems are checked for precision and durability.
Electrical & Control Systems: PLC, sensors, touch screens, and wiring systems meet international safety standards.
Supplier Traceability: All key components are recorded and traceable for quality assurance.
Engineering Design & Technical Review
Before production begins, our engineering team conducts strict design verification:
Mechanical structure analysis for stability and load-bearing capacity
Sealing system optimization for strong and consistent sealing performance
Motion system testing for smooth operation and minimal vibration
Electrical safety review and control logic verification
Detailed technical drawings and specifications are reviewed and approved prior to manufacturing.
Sample Testing & Prototype Verification
For customized or new models:
Prototype machines are assembled for operational testing
Filling accuracy and sealing integrity are verified
Speed and stability tests are conducted under simulated production conditions
Customers may review machine testing results before mass production
This stage ensures the equipment fully meets functional and performance expectations.
In-Production Quality Inspection
Quality checks are performed at every manufacturing stage:
Machining Process
CNC machining tolerance verification
Precision measurement of key components
Surface finishing inspection
Assembly Process
Frame alignment and structural stability inspection
Pneumatic and mechanical connection checks
Electrical wiring verification and safety grounding confirmation
Each inspection result is recorded for traceability and internal audit.
Functional Testing & Performance Validation
Before shipment, every machine undergoes comprehensive performance testing:
Dry-run operation test
Filling accuracy test
Sealing strength test
Speed performance evaluation
Noise and vibration monitoring
Emergency stop and safety protection testing
Only machines that pass full functional inspection are approved for delivery.
Final Inspection & Packaging
Prior to shipment:
Visual inspection of machine surface and finishing
Component completeness verification
Control panel functionality check
Export-standard packaging protection
Protective wrapping and reinforced packaging ensure safe transportation during international shipping.
Standardized Delivery & Installation Support
Delivery schedules are strictly followed
Installation guidance and commissioning support are provided
Operation manuals and technical documentation accompany each machine
We ensure customers receive equipment that is ready for smooth startup.
After-Sales Quality Tracking
Our quality responsibility continues after delivery:
One-year warranty for non-human damage
Long-term technical support
Spare parts supply
Remote troubleshooting assistance
Rapid response to customer inquiries
We continuously collect feedback to improve machine performance and service quality.
Certifications & Compliance
Our machines comply with international quality and safety standards:
ISO9001 Quality Management System Certification
CE Certification for European Market Compliance
These certifications reflect our dedication to standardized production, safety assurance, and global market requirements.

