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Xella Porenbeton Schweiz AG 

Kloten · Since 1999

Xella Porenbeton Schweiz AG supplies autoclaved aerated concrete, mineral insulation and building system products and provides technical planning and advisory services. Its range includes Ytong aerated‑concrete blocks and large-format elements, Multipor mineral insulation boards, Hebel system components, mortars and accessories, together with digital planning services and technical documentation.

Zahnarztpraxis Dr. Mara Schönfeld 

Kloten · Since 2024

The company's core activity is the provision of dental medical services, including prevention, diagnosis, treatment and aftercare of dental, oral and maxillofacial diseases, as well as the performance of dental interventions such as fillings, root canal treatments, dental reconstructions, implants, orthodontics and other dental medical treatments.

Zarf GmbH 

Kloten · Since 2024

zirkulit Beton AG 

Kloten · Since 2023

zirkulit Beton AG distributes circular concrete, including the product families zirkulit beton® and zireco beton®. The concrete is produced according to SN EN 206 and SIA 2030:2021, has technical properties equivalent to primary concrete, and is used in standard strength classes up to C30/37 for various building elements.

zirkulit AG 

Kloten · Since 2003

The core activity of Zirkulit AG is the development and provision of circular building materials and systems for the construction of recyclable houses. This includes the production and distribution of mineral building materials such as concrete, insulation materials, facade components, ceiling elements, plasters and masonry mortars, which enable maximum circularity and reduction of CO₂ emissions through their unique recipes and manufacturing processes. In addition, the company offers consulting and development services to support customers in planning and implementing recyclable construction projects.

Z & S Handel AG 

Kloten · Since 1994

The company's core activity is the trade and distribution of chemical products, particularly for the cosmetics, household, industry, pharmaceutical, fine chemicals, food and feed industries. The company offers its customers a wide range of chemical products, technical consulting, logistics services and support for authorization.

zurich-airportlimousinenservices GmbH, Kloten 

Kloten · Since 2014

zurich-airportlimousinenservices GmbH, Kloten operates chauffeur-driven and limousine transport services, including pre-booked airport transfers, chauffeur services using client or company vehicles, group transfers with vans and coaches, and courier and parcel deliveries. The company operates a Mercedes vehicle fleet and employs licensed, multilingual chauffeurs.

Züri Crêpes Stamenic 

Kloten · Since 2022

The core activity of Züri Crêpes is the production and sale of sweet and savory crêpes made from high-quality ingredients and fresh fillings. The company offers its crêpes both in a fixed range and on order, and is mobile to enrich events and gatherings with a crêpes stand.

Solvo GmbH 

Kloten · Since 2025

Solvo GmbH is a consulting and project management company specializing in project management and engineering. The core activities include: Project Management: Leading and controlling projects to ensure their successful and sustainable implementation. Engineering: Developing and implementing technical solutions that are both economically and ecologically sustainable. Consulting: Supporting customers in identifying and solving problems, as well as developing strategies and concepts. The company's core activities are the combination of project management, engineering, and consulting to support customers in implementing projects and developing sustainable solutions.

Verein Hardwald Schule 

Kloten · Since 2025

The company's core activity is the education and upbringing of children and adolescents in a school environment, with a focus on holistic, sustainable and creative approaches, including nature pedagogy, theatre pedagogy, art and design.