1. The Deep Tech Hardware Napkin: This document, created by a group of European deep tech experts, aims to provide concrete advice and guidance for founders in the deep tech hardware space. It covers various aspects, from market assessment and product development to fundraising and team building.

2. Addressing the Challenges of Deep Tech Hardware: The article highlights the unique challenges faced by deep tech hardware startups, such as the need for significant upfront investments, longer development timelines, and the complexity of manufacturing and scaling. The Deep Tech Hardware Napkin seeks to address these challenges and help founders navigate the landscape more effectively.

3. Empowering European Deep Tech Founders: The article emphasizes the importance of supporting the European deep tech ecosystem, which has seen significant growth in recent years. The Deep Tech Hardware Napkin is part of this effort, providing a valuable resource for founders in the region to access expert advice and guidance as they build their deep tech hardware companies.