• Wood assembly construction • Wood element construction • Joinery work • Interior construction and stair construction We provide our high level of expertise to architects, public authorities, private clients, industry and commerce, as well as general contractors. From our central location in Kreuzlingen, we supply and operate throughout the entire Eastern Switzerland region. We are a member of the Holzbau Schweiz association and the VSSM. As an exemplary employer with an employee-oriented corporate culture, we have also been awarded the Holzbau Plus quality label.

AS PROTECH is a leading innovator in renewable energy and high-performance building solutions. We specialize in designing and delivering cutting-edge photovoltaic systems, windows, and doors, operating as a general contractor to provide integrated, customized solutions for individuals, businesses, and public administrations. With a forward-thinking vision, AS PROTECH is committed not only to providing advanced technological solutions but also to fostering a culture of sustainability, actively contributing to building development and urban regeneration.