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KONTCH's E & E GmbH 

Witterswil · Since 2018

The core activity of KONTCH's E&E is the cultivation, processing and sale of coffee. The company practices sustainable agriculture to produce high-quality coffee and also offers special coffee creations developed with biological expertise. Furthermore, the company is committed to social projects, particularly in the areas of education and social well-being of its employees and the surrounding communities.

Lisser Pensionsstall GmbH 

Witterswil · Since 2006

Lisser Pensionsstall GmbH is a family-run horse boarding stable providing individual care and boarding for horses and ponies. The facility includes turnout boxes, a stable aisle, an outdoor riding arena, an indoor hall and pastures, and it hosts riding courses and events while allowing riders to bring their own instructors.

Luwimmo GmbH 

Witterswil · Since 2008

The core activity of luwimmo gmbh is the professional management and brokerage of real estate, including rental properties, condominium ownership, sales, appraisals, construction management and owner representation. The company provides in-depth consulting and tailored solutions for property owners and strives for long-term partnerships.

NovoLytiX GmbH 

Witterswil · Since 2020

NovoLytiX GmbH supplies immunoassays (RIA and ELISA) for measurement of melatonin in saliva, serum and plasma, and provides related assays such as 6‑sulfatoxymelatonin, vasopressin, caffeine and cortisol.

Oenoservice Hänzi GmbH 

Witterswil · Since 2003

The core activity of Oenoservice Hänzi GmbH is the provision of oenological services and consulting, particularly in the areas of viticulture and winemaking.

Pathology Experts GmbH 

Witterswil · Since 2009

The core activity of Pathology Experts GmbH is to provide expert knowledge and services in the field of toxicological pathology and preclinical research, particularly in the areas of: histopathology expert groups, regulatory support, biotherapeutics, digital pathology, and neuropathology. The company supports the development of artificial intelligence (AI) in pathology and offers services such as annotation and quality control of digital pathology data. It also provides expert knowledge for the evaluation and review of histopathological data and supports the translation of non-clinical histopathological data into relevant information for human safety.

QCW - Quality Consulting Wüthrich GmbH 

Witterswil · Since 2010

QCW - Quality Consulting Wüthrich GmbH provides quality consulting, audit and training services focused on GLP/GxP and ISO compliance, including facility, study and archive audits, CRO and supplier audits, SOP review, inspection-readiness support, and computer system validation. The company also offers document and data audits, mock inspections and full QA support services.

Schönenberger Paul 

Witterswil · Since 1994

Schönenberger Paul provides fiduciary and advisory services to SMEs, municipalities, foundations and non-profit organisations. Core services include tax advice and planning, bookkeeping, preparation of annual financial statements and audit/revision services. The practice also supports company formation, interim management, VAT accounting and financial controlling.

A. Barth & Co. Interstate Tours 

Witterswil · Since 1995

braunimpuls GmbH 

Witterswil · Since 2021

The core activity of the company "braunimpuls GmbH" is the implementation of auditor mentoring and in-house training in the field of quality management, particularly for companies that regularly evaluate their quality management system through audits. The company also offers online mentoring, AI in auditing, and the development of supplier audit concepts.