Quality Policy
At JZJ Glass, quality is not a department — it is embedded in every step of our process. Our ISO 9001:2015 certified quality management system ensures consistent, traceable results from raw material receipt to finished goods shipment.
We operate on a zero-defect mindset: every piece must meet customer specifications before it leaves our facility.
ISO 9001 Quality Management System
Document Control
Standard operating procedures, work instructions, and quality records maintained and version-controlled.
Supplier Evaluation
Raw material suppliers qualified and audited; incoming materials inspected to specifications.
Process Monitoring
Real-time SPC on critical parameters; operator training and qualification programs.
Continuous Improvement
Internal audits monthly; third-party surveillance audits annually; corrective/preventive action system.
Three-Stage Inspection
Incoming Quality Control
- • Raw glass sheet inspection
- • Flatness & thickness tolerance check
- • Bubble/inclusion verification
- • Coating material quality control
In-Process QC
- • Dimensional checks after CNC
- • Visual inspection after each process
- • 100% appearance inspection after printing/coating
- • Real-time SPC monitoring on key parameters
Outgoing QC
- • Finished product inspection
- • Optical testing (spectrophotometer)
- • Mechanical testing (impact/fall test as required)
- • Dimensional final check & packaging review
Testing Equipment
Spectrophotometer
Surface Roughness Tester
Compressive Stress Tester
Thermal Shock Chamber
Impact Tester
Pencil Hardness Tester
Coating Thickness Gauge
Flatness Tester
Standards Compliance
- • EN 12150 (European safety glass)
- • ANSI Z97.1 (American safety glazing)
- • GB 15763.2 (Chinese safety glass)
- • CPSC 16 CFR 1201 (US consumer safety)
- • JIS as needed
- • PPAP capability for automotive customers
Documentation
Available per order:
- • Dimensional inspection reports
- • Material certificates (COC/COA)
- • Optical performance data
- • Third-party test reports (SGS/TUV on request)
- • Defect rate consistently maintained below 0.3%
RMA Process
If quality issues are identified within 7 days of receipt, contact us with photos — verified defects are replaced free of charge with return shipping covered by JZJ Glass.