Our Focuses|Green Product|Product and Service Quality Management
Quality Management for Products and Services
Winbond has formulated a quality policy that aims to establish a comprehensive quality management, zero-defect, and quality-first corporate culture through continuous improvement processes. The goal is to provide customer satisfying products and services and become a world-class company. In accordance with this policy, Winbond has established various regulations and guidelines. In addition to ensuring that product quality and labeling comply with national and regional regulatory requirements, Winbond plans and conducts internal audits in accordance with the requirements of its quality management systems to periodically assess the conformity and effectiveness of operational processes and management mechanisms. also manages quality through internationally recognized quality management systems verified by third-party inspection organizations, including ISO 9001, IATF 16949, and ISO 26262. Emphasis is placed on setting and tracking quality performance indicators and implementing continuous improvement measures. Various control processes, such as FMEA, SPC, and MSA, are employed to comprehensively inspect, assess, and improve product quality to meet customer needs and expectations.
Quality Management Systems and Processes
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International Standards and Certifications
Winbond maintained rigorous production process control and quality management operations covering the CTSP and Kaohsiung fab. Both fabs operated in accordance with IATF 16949, ISO 9001, and QC 080000 and underwent regular thirdparty surveillance audits and recertification to ensure ongoing conformity and effectiveness. Meanwhile, Winbond provides training for relevant internal personnel on the responsibilities and requirements associated with the quality management system, enhancing their understanding of and ability to implement the quality management system, operational procedures, and continual improvement requirements, thereby ensuring its effective implementation. To enhance product quality, yield analysis, supply chain management, and customer requirement insights were strengthened. Multi-dimensional validation ensured alignment with international standards such as the Responsible Business Alliance (RBA) and ESG requirements. High customer standards were followed, and hazardous substance management and production environmental management were implemented to fulfill corporate social responsibility.
Culture of Pursuing Quality
Quality Awards Recognition
Winbond adopted Total Quality Management (TQM) as the overall management framework and advanced quality culture and continuous improvement. Crossfunctional Quality Improvement Teams (QIT) addressed critical topics requiring cross-unit collaboration, while Quality Control Circles (QCC) focused on daily onsite improvements and standardization. These mechanisms reinforced two-way linkage and feedback between strategy and frontline operations, strengthening product reliability, process stability, and operational efficiency and supporting long-term sustainable development.
In external competitions, Winbond delivered strong performance at the 2025 Taiwan Continuous Improvement Awards (TCIA). The competition attracted 137 companies and institutions and 253 teams. Winbond received one gold, three silver, one bronze, and third place for the Best Presentation Award, demonstrating outstanding outcomes in quality management and process continuous improvement. Award-winning projects addressed key topics including yield improvement, defect reduction, and operational decarbonization, reflecting sustainable value creation through quality improvement, efficiency enhancement, and environmental protection.
In production-line quality improvement and international exchange, ICQCC 2025 was held in Taipei. The four-day event brought together more than 10 countries and regions with 319 circles, including 34 Taiwanese enterprises. Winbond’s“ Grinding Method Circle” shared improvement outcomes in bilingual Chinese and English and received a gold award, supporting benchmarking and best practice expansion and strengthening organizational standardization maturity and resilience.
Looking ahead, cross-functional teams and production-line improvement group coverage and effectiveness would continue to deepen. Transparent key indicator management (e.g., yield, defect rate, first-pass yield, cost, energy/water intensity, and reduction of greenhouse gas (GHG) emissions) would continue to drive quality culture upgrades and support long-term net zero objectives.
| Team name | Event theme | Prize |
|---|---|---|
| Perseverance Circle | Reduced defect rate in wafer edge region for 45 nm NOR Flash | Golden Tower Award |
| Synergy Circle | Reduced word-line short defect rate for 45 nm NOR Flash | Silver Tower Award |
| Green Diamond Circle | Winbond Net Zero – reduced carbon emissions from the Taichung fab wastewater treatment system | Silver Tower Award |
| Interstellar Circle | Reduced D25s tRP yield loss | Silver Tower Award |
| Jingdian Circle | Reduced D20 word-line defect rate | Bronze Tower Award |


Year | 2022 | 2023 | 2024 | 2025 |
Golden Tower Award | 2 | 2 | 2 | 1 |
Silver Tower Award | 2 | 1 | 2 | 3 |
Bronze Tower Award | 0 | 0 | 0 | 1 |
Looking ahead, cross-functional teams and production-line improvement group coverage and effectiveness would continue to deepen. Transparent key indicator management (e.g., yield, defect rate, first-pass yield, cost, energy/water intensity, and reduction of greenhouse gas (GHG) emissions) would continue to drive quality culture upgrades and support long-term net zero objectives.
Fostering a Culture of Excellence in QE 2.0
Building on 2024 quality culture promotion, Winbond continued to deepen quality awareness in 2025 through“ edutainment” approaches. Quality was embedded into daily work DNA, shaping a culture of full participation and continuous improvement. Systematic activity designs strengthened professional capabilities and built shared recognition of quality values.
| FMEA best practice sharing sessions | Held quarterly in 2025, attracting 837 managers. Practical case exchanges strengthened risk identification capabilities and systematic problem-solving mindsets, reinforcing product and process quality defenses. |
| Quality Month | Under the“ QE 2.0” theme, activities included quality knowledge contests, promotional videos, and quality poster competitions. On-site Q&A events were held in Jhubei, Taichung, and Kaohsiung with 3,511 total participations, strengthening engagement and quality awareness. |
| Quality case sharing sessions | Held semiannually to pass on best practices, foster innovative thinking and learning, and use below-standard cases to reinforce risk awareness and prevent recurrence. |

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Winbond continued to encourage employees to embed business philosophy and core values into daily management. Through interaction with suppliers and customers, quality culture was extended across the supply chain, advancing excellence management and continuous improvement toward total quality and sustainability objectives.
Product Quality and Digitalization Enhancement Initiatives
The Company has adopted emerging technologies such as big data and artificial intelligence (AI) to improve product quality, process stability, and consistency, while strengthening overall manufacturing reliability. Applications cover the entire product lifecycle, from design and manufacturing to post-shipment quality, with key areas including:
- AI/Machine Learning: Anomaly detection, yield prediction, defect identification, and process optimization
- Big Data Platform: Integration of process, equipment, and quality data to enhance real-time monitoring and decision-making
- IoT Sensing Technology: Improved monitoring accuracy and response speed for critical processes
- Digitalization and Automation: Enhanced quality traceability and reduced human error
Through cross-functional digital transformation projects and standardized platforms, the Company continues to expand AI applications in critical processes and establish replicable quality management capabilities. The specific results achieved include:
- Improved process stability and product consistency
- Reduced quality anomalies and variation
- Reduced scrap and rework losses
- Strengthened quality early-warning and risk-control capabilities
Quantitative Quality Improvement Targets
- Process Capability (Cpk): Improve by 5%–10% annually
- Quality Anomalies (OOC Rate): Reduce by 10% within three years
- Anomaly Detection Efficiency: Shorten detection time by more than 50% after AI implementation
- AI Implementation Coverage: Reach more than 60% of critical processes by 2026
- Quality Data Traceability: Achieve 100% system-based management