Dönni Solar & Bau provides customized solar solutions for residential and commercial clients. From consultation and planning to the installation of photovoltaic systems, we focus on sustainable energy and top-quality service. Our expertise includes roof renovation, building technology, and energy efficiency solutions. Benefit from eco-friendly solar power and optimize your energy costs. With cutting-edge technology and years of experience, we help you transition to renewable energy.

Sehr geehrter Herr Vier Nochmals herzlichen Dank für Ihre flotte und zuverlässige Arbeit. In der heutigen Zeit ist es sehr selten, solch eine kompetente Beratung zu erhalten, von der Auftragsannahme, der Ausführung bis hin zur Abrechnung hat alles reibungslos funktioniert. Ich empfehle Sie wärmstens, eine solche Handwerker-Arbeit findet man heute leider selten. Gerne wieder! Gruss R.

For more than 12 years, Vitalshop Ost has been supplying the Swiss population with scientifically and officially tested active ingredients from nature that are vital for us humans. Our range is available in the Online Store ( www.vitalshopost.ch ) and in the Sales Store at Ahornstrasse 6 in 9100 Herisau AR (appointments by arrangement, gesund@vitalshopost.ch or Phone 071 524 71 11 ). We support those responsible for active health promotion in their professional and private lives - with prevention and advice on acute issues. Vitalshop Ost supplies companies and individuals with natural and sustainable Swiss quality products for vital substance medicine and natural cosmetics. As a supplement to a healthy diet and lifestyle, we promote naturally healthy alternatives in the medical range. Vitalshop Ost is a business unit of 2bwell GmbH . 2bwell offers online marketing services for the marketing of sustainable products that strengthen your health. VitaMind ( vitamind.2bwell.ch ) focuses on consulting and specialized health services for companies and individuals, as well as promotion and education on social issues. VitaMind promotes personal responsibility in health issues with teaching activities and online offers. You can find more information about the company 2bwell GmbH here: vitamind.2bwell.ch .

Being an international player in paints and polymers with high added value, the Mäder group offers its customers global and innovative solutions in demanding markets such as Aeronautics, Railways, Automotive and Building. Anxious to be able to meet the needs of these markets, Mäder puts innovation at the heart of its strategy and thus devotes 10% of its turnover to R&D. Its research, in partnership with universities, is particularly focused on bio-sourced raw materials, green chemistry and reducing the impact of its activity on the environment. Backed by the expertise of its 850 employees, Mäder is now present in Europe as well as in China and India in order to support its customers in their international development. The group specializes in the following processing sectors: Paints, coatings and varnishes • Coil coating technology • UV and EB technology • Railway • ACE • General Industry (machines, devices, special surfaces and applications) • Wind energy • Aerospace • Telecommunications • Plastics Gelcoats and Resins We develop and produce unsaturated polyester resins, gel and top coats, adhesive resins, filled fire protection resins and special resins including the necessary surface finishing products and technologies. Paint raw materials This business line produces standard resins and additives based on polycondensation chemistry. The product range includes modified and unmodified alkyd and polyester resins for various applications in the paint and coatings industry. Toll manufacturing We develop and produce tailor-made products on behalf of our customers: • radiation curing resins • paint raw materials • prepolymers

Project Evolution SA is a company specialized in the construction of energy-efficient wooden houses and buildings. With over 20 years of experience and an operational headquarters in Grono (Canton of Graubünden) since 2020, it is organized to operate throughout Switzerland , managing every construction phase: from planning to final delivery. We work with Swiss precision and a rigorous technical approach, focusing on site organization, timeline compliance, and cost transparency. Structures and Building Systems • Wooden structures using X-LAM system with high static and energy performance • Prefabricated eco-friendly walls , with battens, double mineral wool insulation, and breathable finishes • Custom solutions for single-family homes, villas, extensions, elevations , and multi-storey buildings (up to 7 floors) Insulation and Living Comfort • Natural breathable insulation in rock wool or wood fiber • External thermal insulation systems using ecological, high-efficiency materials • Drywall partitions and suspended ceilings , perfectly smoothed and finished • Carefully executed interior finishes: smoothing, leveling, and surface preparation Interior Works and Installations • Supply and installation of high-efficiency windows and doors • Interior wall cladding and partition walls in drywall • Full coordination of technical installations (electrical, plumbing, mechanical ventilation) Sheet Metal and Roofs • Construction of ventilated and waterproof roofs • Custom-made metal sheet works : copper, aluminum, stainless steel • Gutters, flashings, chimney caps, and external finishes with maximum attention to detail Logistics and Material Transport Even the most complex construction sites are no challenge for us: we transport materials using any necessary method, including crane trucks, tractors, helicopters , or special solutions for isolated or hard-to-reach areas. Efficient organization is one of our core values. Why Choose Project Evolution SA • ✅ Over 2,000 projects completed in Switzerland and Italy • ✅ Advanced shell approach , with a single technical point of contact • ✅ Accuracy in installation, hidden details, and site management • ✅ On-time and on-budget delivery, no surprises • ✅ Expertise in eco-construction and certified natural materials • ✅ Solid experience with prefabricated and sustainable buildings Building with wood in Switzerland? Trust Project Evolution SA We create your eco-friendly wooden house, your sustainable building, or your custom project with maximum technical competence and attention to detail. From design to installation – we are by your side at every step. 📍 Active throughout Switzerland – Contact us for a quote or a personalized consultation.