Alain Guttmann

Golay-Buchel Holding SA manufactures and distributes jewelry and luxury items. The company supplies pearls, diamonds, precious stones and precious metals to watch manufacturers and jewelry designers. Golay-Buchel was founded in 1887 and is headquartered in Lausanne 3 Cour, Switzerland.

JBF Finance SA is a Swiss company that provides financial services. The private company is based in Buchillon, Switzerland and has subsidiaries in the Asia and Europe regions. JBF Finance was founded in 1999.

Part of Ernst & Young Global Ltd., Ernst & Young AG is a Swiss company that provides accounting services. The private company is based in Zurich, Switzerland.

Retripa SA is a private company based in French-speaking Switzerland that specializes in the management of waste materials. With 67 years of expertise, they offer solutions for the collection, recycling, and valuation of materials, as well as logistical containers and means. The Swiss company uses special trucks with low CO2 emissions and have a sustainable recycling rate for respect for the environment. Retripa has 9 sorting and transfer sites in the cantons of Aâ genque, Vaud, and Via Neuché. The company is a subsidiary of the VIPAplan group and is ISO 9001, ISO 14001, and ISO 45001 certified.

Part of WSP Global, Inc., BG Bonnard & Gardel Holding SA is a Swiss company that operates in various fields using engineering, science, and innovation since 1954. The private company is based in Lausanne, Switzerland. BG Ingénieurs Conseils optimizes patient care design in hospitals and participates in the regrouping of TBS's two sites and the creation of a new international site. The company was founded in 1945, and the CEO is Pierre Epars. BG Bonnard & Gardel Holding was acquired by WSP Global, Inc. on January 31, 2023.