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Küwatech GmbH Diethelm + Brunner electric 

Romanshorn · Since 2001

The core activity of Küwatec GmbH encompasses two main areas: 1. **Electrical Installations**: Planning, installation, repair, and maintenance of electrical systems in new buildings and renovations, including lighting, switchgear, telecommunications and networks, building technology, photovoltaic systems, and charging stations. 2. **Sales and Service of Household Appliances**: Consulting, sales, installation, assembly, connection, and repair of household appliances of all brands for kitchens and laundry rooms.

autovirtuell ag 

Romanshorn · Since 2021

The core activity of autovirtuell AG is the organization and implementation of Simracing events and driver safety training. The company offers various products, such as "Race", "Qualifying" and "Time 60", and targets motorsport enthusiasts and car drivers who want to improve their driving safety. The events and training sessions are held in cooperation with the Automobile Club of Switzerland (ACS) and the Autobau Erlebniswelt.

EMS-CHEMIE (Switzerland) AG 

Romanshorn · Since 2017

bodana travel Reisebüro am Bahnhof AG 

Romanshorn · Since 1999

The core activity of Bodana Travel is the planning and organization of trips, as well as advising customers on the selection and booking of travel offers. The company offers individual travel consulting, group and round trips, as well as special travel offers and works with various tour operators.

Genossenschaft Winterwasser Oberthurgau 

Romanshorn · Since 2016

Winterwasser Oberthurgau operates an air-supported dome with a 25-meter pool, used as a swimming hall for fitness swimmers, training swimmers, recreational bathers, and families. The hall offers a unique view of Lake Constance and is open year-round. The company also offers seasonal subscriptions and 10+1 subscriptions, and has a Covid-19 protection concept in place to ensure the safety of its visitors.

GP MARINE GMBH 

Romanshorn · Since 2004

The core activity of GP Marine GmbH is the repair, maintenance and sale of boats and boat engines, as well as the manufacture of special equipment and silencer systems for boats. In addition, the company also offers services such as winter storage, repairs, service and tuning for boats and engines. Furthermore, the company has a car workshop that offers repairs, service and tire service for cars.

Maptec GmbH 

Romanshorn · Since 2020

Maptec GmbH is a motorsport engineering company providing engine development, ECU calibration and integration of motorsport electronics. Services include performance measurements on a Dynapack chassis dynamometer, manufacture of motorsport wiring harnesses, gearbox simulation, injector service and chip tuning.

Oldtimer-Werkstatt Ostschweiz GmbH 

Romanshorn · Since 2023

The company's core activity is the restoration, repair and maintenance of classic cars, youngtimers and modern vehicles, including special services such as spring checks and the sale of used vehicles.

MARON AG 

Romanshorn · Since 2017

MARON AG produces and supplies window coverings and interior sun-protection solutions, offering made-to-measure products such as roller blinds, Venetian blinds, pleated blinds and vertical louvres, together with related systems, installation and consultation services.

MARON Immobilien AG 

Romanshorn · Since 1956

MARON Immobilien AG offers interior window coverings and sun-shading products under the SUN+SHADOW brand, including roller blinds, venetian blinds, pleated blinds, vertical slats and panel systems. The company manufactures made-to-measure items, provides in-home consultations and installation services, and operates an online shop for orders.