VoltMaster Marcin Bielecki

43.21.Z - Installation of electrical systems

33.14.Z - Repair and maintenance of electrical devices

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

43.91.Z - Masonry works

43.99.Z - Other specialized construction works, not classified elsewhere

46.13.Z - Activity of agents involved in wholesale trade of wood and building materials

47.52.Z - Retail sale of small metal products, building materials, paints, and glass

61.10.B - Activities in the field of wired, wireless, and satellite telecommunications