Welcome to KOCH Group AG. With over 300 employees at five locations in Switzerland, we have been providing innovative products, expert advice and tailored services for decades. Our range includes over 100,000 items – from fittings and tools to machines, security technology and factory equipment. Our strengths at a glance: • Range: Over 100,000 items for furniture production, windows, doors, fastening technology, security technology and much more – all tailored to your needs as a tradesperson. • Online shop : A modern shopping experience with easy navigation, detailed product descriptions, CAD data and customisable interfaces for business customers. • Logistics: Efficient processes in our 14,000 m² logistics centre guarantee fast and flexible deliveries – individually tailored to your requirements. • Security technology: Planning, realisation and maintenance of locking systems and access controls by our experienced specialists. • Trade stores: In Bern, St. Gallen and Wallisellen, we offer practical advice, pick-up options and an inspiring exhibition for those interested in building. With the latest technology, dedicated employees and a comprehensive range of services, we create sustainable added value for our customers. Whether at our locations or online – professionals come to KOCH .

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.

W+T hat die aufwendige und komplexe Flachdachsanierung bei uns zu unserer vollen Zufriedenheit ausgeführt. Insbesondere die gewissenhafte und umsichtige Arbeit des Projektleiters Martin Wild haben wir sehr geschätzt. Man hat gut gespürt, dass bei ihm Qualität an erster Stelle steht.

Die Firma für die ganze Gebäudehülle.

M. Thomann AG is your Swiss expert for tank protection, cleaning, renovation, and new tank installations. With over 20 years of experience, we provide professional services for oil tanks, plastic tanks, and rainwater tanks. From inspections and leak protection to interior coatings and tank conversions – we guarantee safety, quality, and environmental compliance. Rely on certified professionals for every aspect of your tank system.

Outclean is your certified partner for professional solar panel cleaning in Switzerland. With regional teams based in Basel, Zurich, Bern, Lucerne, Aargau and Langenthal, we offer high-quality, environmentally friendly cleaning services for both residential and commercial customers – with no travel costs within 100 km. 🌞 Why clean your solar panels? Dust, pollen, bird droppings and other debris can reduce your system’s efficiency by up to 30%. Especially flat roofs, agricultural buildings or industrial areas require regular cleaning to maintain optimal performance. Outclean restores the full potential of your photovoltaic system – safely, professionally and without damage. 🧼 Our Services: - Certified solar panel cleaning with demineralized water - Robotic cleaning for larger PV systems - Photovoltaic maintenance and visual inspections - Green roof care and roof cleaning - Service contracts for large installations - No travel costs within 100 km from our service hubs - Drone-based inspection & quoting (on request) ✅ Why choose Outclean? - Certified team with specialized equipment - No chemicals – 100% eco-friendly - Visible performance boost after cleaning - Transparent pricing with no hidden fees - Fast scheduling & personal service - Free quote – even via Google Earth analysis 📍 Service Area: We serve all of German-speaking Switzerland, including Basel, Zurich, Bern, Aargau, Lucerne, Solothurn, Thurgau, and St. Gallen. Our decentralized model ensures fast, local response with no extra travel fees up to 100 km. 👷‍♂️ Who we serve: - Homeowners with residential solar systems - Farms and agricultural facilities - Industrial and commercial rooftops - Municipal buildings and public infrastructure - Property managers and facility services 💬 What our customers say: “Outclean cleaned the solar panels on our factory roof – the result was an 18% increase in performance. Clean job, fair price – we’ll book again!” 🔒 Safety & Quality Guaranteed: All services comply with safety regulations (e.g., SUVA). Our technicians are trained for working at heights and are fully insured. Each job includes before/after photo documentation. 🌱 Sustainability is our foundation: We only use filtered, demineralized water. No chemicals, no risk to your panels, and no damage to the environment. 📞 Contact us for a free quote: Phone/WhatsApp: +41 77 925 42 60 Email: kontakt@outclean.ch Website: www.outclean.ch Or use the contact form on our website – we typically reply within 24 hours.