KRAJOWA IZBA TRANSFORMACJI ENERGETYKI I CIEPŁOWNICTWA

71.12.Z - Engineering activities and related technical consultancy

43.22.Z - Installation of plumbing, heating, and air-conditioning systems

47.91.Z - Intermediary retail sale, non-specialized

58.11.Z - Publishing of books

58.13.Z - Publishing of journals and periodicals

63.12.Z - Services related to computing infrastructure, data processing, website management (hosting), and other information services

72.19.Z - Scientific research and development activities

74.90.Z - Other professional, scientific and technical activities, not elsewhere classified

82.30.Z - Activities related to organizing fairs, exhibitions, and congresses

94.99.Z - Activities of other membership organizations, not elsewhere classified