Quality Assurance
ISO 9001:2015 certified manufacturing with 3-stage quality control and a 99.5%+ production yield rate.
Quality is not a department at Relialink — it is built into every process, from supplier qualification to final shipment inspection. Since our founding, we have maintained an uncompromising quality culture supported by documented procedures, trained personnel, and calibrated test equipment.
Certifications & Compliance
Every product is RoHS, CE, and FCC compliant, ensuring smooth import and regulatory approval in North America, Europe, and beyond.
ISO 9001:2015
International quality management system standard
All manufacturing processes
RoHS
Restriction of Hazardous Substances (EU Directive)
All products
CE
European conformity marking
Products sold in EU markets
FCC
Federal Communications Commission compliance
Wireless/electronic products for US marketOur 3-Stage Quality Control System
From incoming materials to outgoing shipment, every order passes through three dedicated quality checkpoints.
IQC — Incoming Quality Control
All raw materials and purchased components — including LCD glass, driver ICs, LED backlights, and connectors — are inspected upon receipt before entering production. Inspection covers dimensional verification, electrical parameter testing, visual defect inspection, and supplier documentation review. Materials that fail IQC are quarantined and returned without exception.
IPQC — In-Process Quality Control
During production, our IPQC team monitors critical process parameters at each manufacturing stage. This includes solder paste volume inspection, component placement accuracy verification, reflow temperature profiling, and functional testing after assembly. Statistical process control (SPC) is applied to detect drift before defects occur. Any out-of-spec finding triggers immediate line stoppage and root cause analysis.
OQC — Outgoing Quality Control
Before shipment, every order undergoes outgoing quality inspection based on AQL (Acceptable Quality Level) sampling standards. OQC covers full functional testing, optical performance measurement, cosmetic inspection, and packaging verification. A quality certificate (COA) and inspection report are generated for each shipment.
Testing Equipment & Capabilities
Our Shenzhen facility is equipped with comprehensive testing instruments to verify display performance and reliability.
AOI (Automatic Optical Inspection)
Automated board-level inspection for solder defects and missing components
Function Testing
100% electrical and display function verification on all finished modules
Optical Performance Testing
Luminance (nits), contrast ratio, viewing angle, and color gamut measurement
Reliability Testing
High-temp storage (85C), low-temp storage (-40C), thermal cycling, humidity testing
ESD Testing
Electrostatic discharge sensitivity testing per IEC 61000-4-2
Vibration & Shock Testing
For automotive and industrial-grade products
Full Batch Traceability
Every product carries a unique batch code for complete material and production history.
Every product manufactured at Relialink carries a unique batch code and, where applicable, a serial number. Our traceability system records the material lot numbers of all major components, production date, line assignment, operator ID, and all inspection results associated with each batch. In the event of a field quality issue, we can trace any returned product back to its raw material sources and production conditions within hours — enabling rapid root cause analysis and targeted corrective action. Traceability records are retained for a minimum of 5 years.
Our Production Environment
Quality Documentation Available on Request
We provide customers with COA (Certificate of Analysis), test reports, and certification copies for every order. For new customers, sample quality documentation is available before purchase commitment.