| 6 | Manufacturing-Journal provement and fast root-cause analysis whenever it is needed.In terms of capacity, REFU Hungary cur-rently supports up to 40,000 storage de-vices annually (expandable to 60,000), as well as approximately 12,000 power-inverter units plus 3,000 electrical device per year. Planning remains flexible and depends on product mix—an important consideration for OEM customers navi-gating dynamic market conditions and evolving product portfolios.Quality systems and end-to-end traceability“Quality is embedded in every aspect of our operations,” REFU Hungary under-scores. The company operates under ISO 9001 and ISO 14001 management sys-tems, with regular audits to ensure com-pliance and drive continuous improve-ment. All processes adhere to quality standards and operational frameworks defined within the PRETTL Group.A key pillar of the quality strategy is the ELAM digital system, which re-cords every assembly step—capturing torque data, operator ID, and real-time process status. This granular view of production is complemented by an SAP-integrated MES environment, en-abling end-to-end traceability across procurement, production, and logis-tics. The result is a closed feedback loop from incoming components to finished goods, equipped to support customer audits, regulatory require-ments, and rapid issue resolution. To ensure long-term field reliability, eve-ry unit undergoes burn-in procedures and functional end-of-line testing, re-inforcing the plant’s commitment to robust, repeatable quality.Product and technology focus: manufacturing agility over IPWhile core product development is led by REFU Elektronik or OEM partners, REFU Hungary concentrates on turning advanced designs into manufacturable, scalable, and compliant products for the European market. The differentiator here is manufacturing agility: the ability to handle both low- and high-volume production with equal discipline, sup-porting diverse product families—from hybrid inverters to energy-storage sys-tems and EV charging.This flexibility is strengthened by ver-tical and horizontal integration within PRETTL, which provides access to criti-cal categories such as power-electron-ics components, housings, harnesses, and mechanical parts. In an era of supply-chain volatility, this structure yields a practical advantage: strategic component availability, dual-sourcing for critical parts, and close cooperation with sister companies. Combined with the group’s decades of power-electron-ics manufacturing expertise, it makes REFU Hungary a trusted partner for OEMs seeking to accelerate EU-based production without compromising on quality or compliance.Supply-chain design for resilienceThe supply-chain architecture support-ing Érd is explicitly designed for resil-ience and flexibility. The team main-tains an intelligent mix of EU-based
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