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Galerie Philippe David AG 

Zurich · Since 2017

The core activity of Philippe David AG is art consulting and trading in artworks, particularly the brokerage of artworks to private collectors, institutions and museums, as well as the organization of exhibitions and the brokerage of artworks to international art fairs. The company also offers services such as research and valuation of artworks, creation of inventories and organization of loans to museums.

GAM Investment Management (Switzerland) AG 

Zurich · Since 1990

The core activity of GAM Investments encompasses three main areas: 1. **Investment Management**: The company offers active investment solutions and products to institutions, financial intermediaries, and private investors. 2. **Wealth Management**: GAM Investments provides wealth management services to private investors and institutions. 3. **Fund Management Services**: The company offers fund management services, including fund administration and other support services to third-party providers. In summary, the core activity of GAM Investments can be described as asset management and management for institutions, financial intermediaries, and private investors.

GAM (Switzerland) Holding AG 

Zurich · Since 1970

GAM (Switzerland) Holding AG is a global investment platform offering specialist active investment management, alternative investment strategies and wealth management services.

Gartenmann Engineering AG 

Zurich · Since 2014

Gartenmann Engineering AG is an independent engineering firm providing specialist services for the construction sector, with a focus on acoustics, building physics, energy, sustainability, pollutant analysis and fire protection. The company delivers consulting, expert reports, measurements and simulation-based solutions across planning and execution phases.

Gastroconsult AG 

Zurich · Since 1996

Gastroconsult AG provides fiduciary, accounting, tax and advisory services for the gastronomy and hotel sector, including financial accounting, payroll administration, tax services, audits and business consulting such as succession planning. The firm also offers real-estate services for hospitality properties and analysis tools like GastroAnalyse for operational benchmarking.

Gate 49 Enterprise (Schweiz) AG 

Zurich · Since 1999

Gate 49 Enterprise (Schweiz) AG develops and supplies custom web applications and business software, including a Service ERP focused on after‑sales processes and the eBUCO electronic budget and controlling application. Its solutions cover repair management, sales and purchasing modules, logistics and inventory management, and interfaces for data exchange and reporting.

Gätzi & Partner Treuhand AG 

Zurich · Since 2016

The core activity of Gätzi & Partner Treuhand AG is the provision of trust and consulting services, particularly for companies and private individuals. This includes, among other things: fiduciary services, consulting in financial and legal matters, support in business management and development, and the creation of solutions for individual and changing needs. The company positions itself as a reliable and trustworthy partner for its clients, emphasizing quality, reliability, and trust.

GB Turbo Blaszczyk 

Zurich · Since 2023

The core activity of GB Turbo is the sale, repair and upgrade of turbochargers and particulate filters for vehicles. The company offers a wide range of products for various vehicle brands and ships them throughout Switzerland.

GEA Ingenieure AG 

Zurich · Since 2020

The core activity of GEA Ingenieure AG is the planning of building automation systems, technical coordination of various trades, as well as operational and energy optimizations.

gebäudesicherer.ch GmbH 

Zurich · Since 2012

The core activity of the company "gebäudesicherer.ch GmbH" consists of planning, implementing and maintaining security systems for buildings, including access control systems, video and alarm systems, door conversions, burglary protection and escape and rescue route technology. The company also offers consulting, specialist construction management and service for these systems.