The Electrosub in Budapest has established itself as a central meeting point for professionals in the electronics and digital industries. This annual autumn event attracts engineers, technical experts, and decision-makers who want to exchange and learn about the latest technologies and developments. The fair focuses on Industry 4.0, with an emphasis on electronic components, robotics, automation, and digital transformation. The event is held over two days at the modern and accessible Lurdy Conference and Event Centre in Budapest. Visitors can expect a wide range of exhibitions, from electronic components and manufacturing tools to solutions in medical electronics and e-mobility. Additionally, there are the latest developments in 3D printing technology, industrial software solutions, and CAD/CAE tools. A highlight of Electrosub is the presentations and workshops by leading experts from Hungary and internationally, offering insights into the application and potential of AI, Big Data, and cloud computing. The fair also serves as a platform for discussions on cybersecurity, IoT solutions, and innovative technologies in the field of wireless transmission and 5G networks. Running parallel to the technical exhibition is a three-day conference that enables participants to learn about current research results and market trends and network with other professionals and industry representatives. This event requires prior registration and is free of charge for registered trade visitors. With its strong focus on technical, commercial, and logistical services, Electrosub provides a unique opportunity to learn about the latest developments in electronics manufacturing, quality assurance, and material testing, offering an indispensable platform for all who are at the forefront of technological innovation and seeking solutions for the challenges of digital transformation. The Electrosub will take place on 2 days from Wednesday, 08. October to Thursday, 09. October 2025 in Budapest.