Schmucki AG in Jona has been delivering premium metal construction and custom metalwork solutions since 1900. As a family-owned business in its fourth generation, the company combines craftsmanship, modern manufacturing and personalised service. Services include staircases, railings, handrails, balcony and wind protection glazing, canopies, doors, shopfront systems and tailor-made metal solutions for residential and commercial projects.

H. Rosenberger GmbH in Jona, Switzerland, specializes in professional timber construction, custom new builds, renovations and high-quality wood solutions. Since 2003, the company has delivered reliable craftsmanship and sustainable construction for private clients, architects and businesses. Services include timber consulting, planning and structural design, interior and exterior wood construction, staircase construction, dormer installations, roof windows, prefabricated element construction and terraces. With modern infrastructure and extensive expertise, Rosenberger creates durable and high-quality building solutions.