NADCA – National Air Duct Cleaners Association

Co-plan

European Ventilation Hygiene Association

LIFA AIR

Heating and Ventilating Contractor’s Association

ЮКОНОМИКС ЕООД

BHVAHA – The Bulgarian Association of the Companies for Hygiene of Air-Conditioning Installations

BIS – Bulgarian institute for standardization

BulgariaNews  (online newspaper)

Air Systems   (Bulgarian company for Ventilation and Air Conditioning )

Ggebhardt-Stahl  (German company for Ventilation and Air Conditioning)

Mik Traffic  (Bulgarian company for professional and domestic hygiene)

BulService EOOD(The first company in Bulgaria with a full range of services for professional management and maintenance of properties)