The core activity of CERES is the inspection and certification of environmental standards, particularly in the areas of: Organic food, Sustainable textiles, GLOBALG.A.P., Food sustainability, and Climate and environmental standards. The company offers certification services for various product categories, including: Organic food (e.g. Bio Suisse, Bioland, EU-Bio), Sustainable textiles (e.g. GOTS, OCS, RCS), and Climate and environmental standards (e.g. CO2-Land, EBC, Global Artisan). CERES has branches in Germany and Switzerland and offers its services internationally.