Quality Before Production
Material verification (IQC) and First Article Inspection (FAI) happen before mass production — not just at final inspection.
Quality Control
Quality Control System for Precision Manufacturing
From Material to Delivery — Quality at Every Step
Quality Control
Zhuocheng operates a structured quality control system certified to ISO 9001:2015. Every production order follows a five-stage quality process: Incoming Material Inspection (IQC), First Article Inspection (FAI), In-Process Inspection (IPQC), Final Quality Inspection (OQC), and full traceability — ensuring every part meets drawing requirements.
5 Stages IQC → FAI → IPQC → OQC → Traceability
ISO 9001 Certified quality system
100% FAI before production
Full Lot traceability system
Why This Capability
In-Process Monitoring
IPQC monitors dimensional stability, tool wear and critical tolerances during production — not just at final inspection.
Full Traceability
Every order is traceable from material batch to inspection records to operator — supporting audits and customer reviews.
Best-Fit Programs
IQC Incoming Material Certificate & spec verification
FAI First Article Critical dimensions approved
IPQC In-Process Stability & tolerance control
OQC Final Inspection Dimensions · Appearance · Qty
Capability & Equipment
- Quality System
- ISO 9001:2015 Certified
- Incoming Inspection (IQC)
- Material certificate verification · Spec confirmation · Dimensional check · Batch recording
- First Article Inspection (FAI)
- Drawing requirement verification · Critical dimension check · Parameter confirmation · Sample approval
- In-Process Inspection (IPQC)
- Periodic dimensional check · Tool wear monitoring · Parameter control · Critical tolerance verification
- Final Inspection (OQC)
- Final dimensional inspection · Appearance check · Quantity verification · Packaging confirmation
- Traceability
- Drawing version · Material batch · Production date · Equipment · Inspection records · Operator
- Inspection Frequency
- Adjusted by part complexity, customer requirements and production volume
- Quality Reports
- Dimensional Report · FAI Report · Material Certificate · Final Inspection Report
What We Support
IQC — Incoming Material
Verification of material certificates, specifications, dimensions and appearance before production begins.
FAI — First Article
Complete verification of drawing requirements and critical dimensions before production proceeds.
IPQC — In-Process
Periodic inspection of dimensions, tool wear and process parameters during production.
OQC — Final Inspection
Final dimensional inspection, appearance check, quantity verification and packaging confirmation before delivery.
Traceability System
Full lot traceability — drawing version, material batch, production date, equipment, inspector and records.
Quality Reports
Dimensional inspection report, FAI report, material certificate and final inspection report available per request.
Process Features
Material Certificate
Material certificates (MTC) verified and available for customer review.
FAI Report
First Article Inspection report documenting all critical dimensions and features.
Dimensional Report
Complete dimensional inspection report with measured values and tolerances.
Surface Treatment Report
Report on surface finish thickness, color and salt spray test results where applicable.
Final Inspection Report
Comprehensive final inspection report covering dimensions, appearance and quantity.
Sample Reports
Sample inspection reports available (with sensitive information removed) for supplier evaluation.
Materials & Process Fit
- All Materials
- Metals · Plastics · Composites
- Certificate Types
- MTC · RoHS · REACH
- Inspection Types
- Dimensional · Visual · Functional
- Report Types
- FAI · IPQC · OQC · CMM
- Traceability
- Batch · Date · Operator · Equipment
Precision Shaft with Concentricity Requirement
- Application:
- Automotive sensor assembly
- Material:
- Stainless steel 304
- Challenge:
- Shaft with Ø5 mm diameter, 40 mm length, concentricity requirement of 0.01 mm between two bearing journals.
- Process:
- IQC material verification → FAI with CMM concentricity check → IPQC every 50 pcs → OQC 100% final inspection.
- Result:
- Stable production with 100% concentricity verification, zero rejection lots over 6-month production program.
FAQ
What is your quality control process?
Every order follows five stages: IQC (incoming material), FAI (first article), IPQC (in-process), OQC (final inspection), and full traceability — all under ISO 9001:2015.
Do you perform First Article Inspection (FAI)?
Yes. FAI is standard before production proceeds. All critical dimensions and features are verified against drawing requirements.
Can you provide inspection reports?
Yes. Dimensional inspection report, FAI report, material certificate, surface treatment report and final inspection report are available per request. Sample reports (with sensitive info removed) can be provided for supplier evaluation.
How do you handle non-conforming parts?
Non-conforming parts are segregated and documented. Root cause analysis is performed and corrective actions implemented. Quality-related rework or replacement is provided free of charge.
Do you offer traceability?
Yes. Every order is traceable from material batch to production date, equipment, inspection records and operator information.
NEXT STEP Have Quality Requirements for Your Parts?
Send us your drawing with inspection requirements, critical dimensions and quality documentation needs. Our team will plan the complete quality control route.