Jakub Byczkowski

25.30.Z - Manufacture of weapons and ammunition

25.51.Z - Coating of metals

25.52.Z - Heat treatment of metals

25.53.Z - Mechanical processing of metal parts

25.61.Z - Production of cutlery and knives

33.12.Z - Repair and maintenance of machinery

33.15.Z - Repair and maintenance of civilian ships and boats

33.16.Z - Repair and maintenance of civilian aircraft and spacecraft

33.17.Z - Repair and maintenance of other civil transport equipment

33.18.Z - Repair and maintenance of military combat vehicles, ships, boats, aircraft, and spacecraft

47.63.Z - Retail sale of sports equipment

47.69.C - Retail sale of other cultural and recreational products, not elsewhere classified

47.79.C - Retail sale of other used products

47.91.Z - Intermediary retail sale, non-specialized

47.92.Z - Intermediary retail sale, specialized

62.20.B - IT consulting and IT equipment management activities

62.90.Z - Other IT and computer-related services

82.10.Z - Office administrative support activities, including related services

85.51.Z - Non-school forms of sports education and recreational and sports activities

85.59.B - Courses and training for acquiring knowledge, skills, and professional qualifications in non-school forms

85.59.D - Other non-school forms of education, not classified elsewhere

96.99.Z - Other individual services not classified elsewhere