P.H.U. E-system Michał Czerniak

43.21.Z - Electrical installation

42.21.Z - Works related to construction oftransmission pipelines and distribution networks

42.22.Z - Works related to construction of telecommunications and electricity lines

43.22.Z - Plumbing, heat and air-conditioning installation

43.29.Z - Other construction installation

46.43.Z - Wholesale of electrical household appliances

46.47.Z - Wholesale of furniture, carpets and lighting equipment

46.51.Z - Wholesale of computers, peripheral equipment and software

46.52.Z - Wholesale of electronic and telecommunications equipment and parts thereof

46.66.Z - Wholesale of other office machinery and equipment

47.41.Z - Retail sale of computers, peripheral units and software in specialised stores

47.42.Z - Retail sale of telecommunications equipment in specialised stores

47.52.Z - Retail sale of hardware, paints and glass in specialised stores

47.59.Z - Retail sale of furniture, lighting equipment and other household articles in specialised stores

61.10.Z - Wired telecommunications activities

61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities

61.30.Z - Satellite telecommunications activities

61.90.Z - Other telecommunications activities

62.03.Z - Computer facilities management activities

62.09.Z - Other information technology and computer service activities

71.11.Z - Architectural activities

71.12.Z - Engineering activities and related technical consultancy

80.10.Z - Private security activities, excluding security systems service activities

80.20.Z - Security systems service activities

80.30.Z - Investigation activities

95.11.Z - Repair and maintenance of computers and peripheral equipment

95.12.Z - Repair and maintenance of (tele)communication equipment

95.22.Z - Repair and maintenance of household appliances and home and garden equipment