01
Before Production
BOM review, material preparation, component package confirmation and production requirement review.
BOM ReviewMaterial CheckRisk Confirmation
DQX Quality & Testing Center
Quality Assurance for Reliable PCBA Manufacturing
DQX controls PCBA quality through certified management systems, inspection equipment, process control, functional testing, final QC and secure delivery review.
Certified Quality Control
ISO, IPC, RoHS, REACH and project-specific documentation support.
Inspection Coverage
AOI · SPI · X-Ray · ICT · FCT
Quality Testing Video
See How DQX Verifies PCBA Quality
A closer view of inspection, testing, soldering review and delivery checks used across PCBA manufacturing projects.
AOI / SPI Inspection
Optical and solder paste inspection help verify placement quality, solder paste condition and visible SMT process issues before delivery.
Quality Control System
A Quality System Covering the Full PCBA Process
Quality control is integrated into the project lifecycle, from engineering review and material preparation to assembly inspection, testing and final delivery confirmation.
02
During Assembly
SMT, THT, soldering, reflow and mixed assembly processes are controlled according to project requirements.
SMT ControlTHT ReviewNitrogen Reflow
03
Before Delivery
Finished PCBAs are checked through inspection, testing, final QC and secure packaging before shipment.
AOI / X-RayFCT / AgingFinal QC
Inspection & Testing Capabilities
Equipment-Backed Quality Verification
Inspection and testing methods are selected according to product design, reliability expectations, customer procedures and agreed quality scope.
AOI Inspection
Automated optical inspection for soldering, placement and visible assembly review.
SPI Inspection
Solder paste inspection support for SMT process control before placement.
X-Ray Inspection
Internal solder joint and hidden defect inspection for selected assemblies.
ICT Testing
In-circuit testing support based on board design and fixture requirements.
FCT Testing
Functional testing according to customer-defined procedures and pass criteria.
Aging Test
Stability review under defined operating and environmental conditions when required.
Burn-in Test
Long-duration operating test support for selected reliability-focused projects.
ESD Control
Electrostatic control awareness across PCBA handling, inspection and assembly.
Certified Quality & Compliance
Certified Quality and Compliance Support
DQX supports global electronics projects with quality management, environmental, safety, automotive-related and material compliance documentation.
Quality management system
Environmental and safety documentation
Material compliance support
IPC workmanship criteria awareness
ISO 9001
Quality Management System
ISO 14001
Environmental Management
ISO 45001
Occupational Health & Safety
IATF 16949
Automotive Quality Management
IPC-A-610
Assembly Workmanship Criteria
J-STD-001
Soldered Assembly Standard
RoHS
Restricted Substances Compliance
REACH
Chemical Compliance Support
PCBA Quality Workflow
Quality Control from Review to Delivery
Each project moves through clear checkpoints so inspection, testing and documentation requirements can be aligned before shipment.
Engineering Review
Files, BOM, drawings and quality requirements are reviewed before production planning.
Incoming Material Inspection
Components, packages and production materials are checked before assembly preparation.
SMT / THT Process Control
Assembly processes are controlled according to production route and project requirements.
AOI / X-Ray / Visual Inspection
Inspection methods are applied to review placement, soldering and assembly conditions.
ICT / FCT / Aging Test
Testing is arranged based on customer procedures, fixtures and agreed quality scope.
Final QC & Delivery Review
Finished PCBAs are reviewed, packed and prepared for secure shipment.
Manufacturing Stage Control
Quality Control Across Manufacturing Stages
Different PCBA services require different quality checkpoints. DQX aligns inspection and testing logic with the actual production route.
SMT Assembly
Solder paste, placement accuracy, nitrogen reflow option and AOI inspection.
THT Assembly
Polarity, insertion position, solder joint condition and mechanical connection review.
Functional Testing
Power-on check, fixture-based test, customer-defined procedure and final function review.
Box Build
Cable routing, enclosure fit, connector matching, power-on check and packing review.
Records & Traceability
Quality Records and Traceability Support
Traceability helps customers understand production feedback, review issues and support repeat manufacturing. DQX coordinates production records, inspection feedback and project notes according to order requirements.
Project informationBOM versionInspection resultsTesting feedbackProduction notesPacking records
Inspection StatusAOI / X-Ray / Visual reviewReviewed
Testing FeedbackICT / FCT / AgingLogged
Production NotesRepeat-order referenceUpdated
Customer CommunicationIssue feedback, photos and quality documents can be coordinated when required.
Final QC & Packaging
Final QC and Secure Packaging Before Delivery
Before delivery, finished PCBAs are checked for quantity, appearance, documentation requirements and packaging protection. Secure packing helps reduce handling and transportation risk.
Final appearance check
Label and quantity confirmation
Anti-static packaging
Protective packing
Delivery preparation
Quality FAQ
PCBA Quality Assurance FAQ
Common questions about inspection, testing, certificates, compliance documents and quality feedback.
What quality standards does DQX follow?
DQX supports quality management and compliance documentation including ISO 9001, ISO 14001, ISO 45001, IATF 16949, IPC-A-610, J-STD-001, RoHS and REACH according to project scope.
Do you provide AOI, X-Ray, ICT or FCT testing?
Yes. AOI, SPI, X-Ray, ICT, FCT, aging and burn-in testing can be arranged based on board design, product requirements, fixtures and agreed inspection scope.
Can DQX follow customer-defined testing procedures?
Yes. Customer-defined procedures, pass / fail criteria, fixtures, firmware files and operating instructions can be reviewed before production and followed during testing when confirmed.
Can you provide certificates or compliance documents?
Relevant quality certificates, compliance documents and project-specific inspection records can be provided according to customer and order requirements.
Do you support nitrogen reflow for SMT assembly?
Nitrogen reflow is available for SMT projects that require a cleaner and more controlled soldering atmosphere. Standard air reflow remains available for general SMT builds.
How does DQX handle quality feedback after delivery?
DQX reviews project information, production records, photos, test feedback and issue descriptions, then coordinates practical communication for current and future production improvement.
Quality Requirement Confirmation
Need Quality Requirements Confirmed Before Production?
Share your inspection criteria, compliance requirements, testing procedures or documentation needs before quotation. DQX can review the practical checkpoints required for your PCBA project.
Customer Can Provide
- Inspection criteria
- Functional test procedures
- Compliance requirements
- Packaging requirements
- Certificate requests
- Traceability expectations
DQX Can Confirm
- Testing arrangement
- Inspection checkpoints
- Quality documentation
- Production feasibility
- Delivery review