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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.