ProperSound Marcin Zastawnik

71.20.B - Inspection and issuing opinions on the technical condition of chimneys and ventilation ducts

33.13.Z - Repair and maintenance of electronic and optical devices

33.14.Z - Repair and maintenance of electrical devices

43.39.Z - Specialized construction works

46.18.Z - Activity of agents involved in wholesale trade of other specified goods

46.19.Z - Activity of agents involved in wholesale trade of non-specialized goods

47.91.Z - Intermediary retail sale, non-specialized

47.99.Z - Retail trade

59.11.Z - Activities related to the production of films, video recordings, and television programs

59.12.Z - Post-production activities related to films, video recordings, and television programs

73.11.Z - Advertising agency activities

74.10.Z - Specialized design activities

77.39.Z - Rental and leasing of other machinery, equipment, and tangible assets, not elsewhere classified

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