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Schlosserei Griesemer GmbH 

Altnau · Since 2000

Schlosserei Griesemer GmbH performs metal construction, locksmith and metal-processing work and provides service and maintenance for stairs, gates, cladding, furniture and railings. Fabrication uses steel, aluminium, stainless steel and sometimes other alloys, with production processes such as laser cutting, press braking and welding.

sesemi GmbH 

Altnau · Since 2015

Solar One Invest AG 

Altnau · Since 2016

The core activities of Solar One Invest AG include: 1. **Real Estate Brokerage**: The company brokers plots of land, commercial properties, rental properties, and residential properties in Switzerland and abroad, particularly in Greece. 2. **Financing**: Solar One Invest AG offers financing solutions for the acquisition of properties and solar systems, working closely with renowned financial institutions. 3. **Renewable Energy**: The company develops and implements solar projects, including photovoltaic systems and thermal solar systems, as well as biogas and wind power projects. These three core activities are closely interlinked and form the basis of Solar One Invest AG's business model.

Sports-Media Twerenbold 

Altnau · Since 2011

The core activity of SPORTS-MEDIA.ch is the creation and distribution of sports photographs, particularly of ice hockey games of HC Thurgau, as well as other sports and clubs.

Stiftung zur Förderung der 'Stiftung Christ wohin?' 

Altnau · Since 2021

The core activity of the company 'Christ Wohin?' is the organization and implementation of retreats, i.e. spiritual exercises and retreats, as well as the maintenance and management of the premises and facilities used for this purpose, including a chapel.

Suter Gartenbau 

Altnau · Since 1996

The core activity of Suter Gartenbau is the planning, creation and maintenance of gardens, including the construction of stone gardens, house entrances and stairs, front gardens and entrance paths. The company also offers consulting and planning services for garden projects and has a wide range of specialized expertise in garden maintenance, including the application of mycorrhizal fungi and the implementation of plant protection measures.

twpublishing gmbh 

Altnau · Since 2022

twpublishing gmbh provides communication and editorial services focused on conception, content creation and multichannel publishing for technical sectors such as automotive, ICT, building automation and mechanical engineering. Services include producing channel-optimized content (texts, images, infographics, videos, podcasts), content marketing, social media management, webcast/event moderation, Editor as a Service, press releases, technical articles, white papers, product brochures and customer magazines.

Vectura AG 

Altnau · Since 2021

The core activity of Vectura AG is the manufacture and/or distribution of automobiles and means of transport.

Vetsch Consulting & Food Sales 

Altnau · Since 2021

The core activity of Vetsch Consulting & Food Sales is to advise and support Swiss SMEs and start-ups in the sales and marketing of consumer goods, particularly in the food industry. The company offers services such as marketing support, sales support, export support and ad-interim management to support customers in opening up new markets and acquiring new customers.

Vileala GmbH 

Altnau · Since 2024

The company Vileala GmbH is engaged in the cultivation of specialty mushrooms. Its core activity includes the construction and operation of innovative breeding facilities, where modern technologies and fully digitized processes are used to ensure precise control and monitoring of the entire breeding process. The goal is to create the best conditions for the growth of specialty mushrooms while maximizing the efficiency of the production facilities.