TESO – TECHNICKÉ SLUŽBY OCHRANY OVZDUŠÍ OSTRAVA, spol. Operating under the nationwide TESO brand (with offices in Prague, Brno, and Česká Lípa), they focus primarily on the Moravian-Silesian, Olomouc, Zlín, and parts of the South Moravian regions. With an emphasis on air pollution monitoring, emission measurements, and environmental impact assessment, they provide comprehensive services in the field of environmental protection.

Since 2015, the company has also been accredited to conduct indoor and outdoor noise measurements. Their wide range of services includes authorized and technical emission measurements, where they measure persistent organic pollutants (POPs), heavy metals, and various organic and inorganic compounds. They are also equipped to measure emissions from all types of energy and technological units, including the largest chemical facilities in the Moravian-Silesian and Zlín regions.

Additionally, the company offers expert assessments, dispersion studies, and environmental impact assessments, covering both point and linear sources of air pollution. They are also involved in greenhouse gas emission verification and noise studies, providing accurate data and solutions for various industries. With their commitment to environmental protection, TECHNICKÉ SLUŽBY OCHRANY OVZDUŠÍ OSTRAVA, spol