A. Mechanics – engines – machinery – tools – industrial processes – metallurgy
B. Clocks and watches – jewelry – machinery – tools
C. Computer sciences – software – electronics – electricity – methods of communication
D. Building - Architecture - Civil Engineering – construction – materials - woodwork
E. Sanitation – Ventilation – Heating
F. Security – rescue – Alarm
G. Ironware – D.I.Y.
H. Furnishing – Interior architecture
I. Domestic Science – Restaurant Equipment
J. Commercial, Industrial and office equipment
K. Agriculture – horticulture – Gardening
L. Clothing – textiles – machines and accessories
M. Medicine – Surgery – orthopedics – Material for the handicapped
N. Optics – Photography – Cinematography
O. Teaching methods and materials – musical Instruments Art materials
P. Transport – motor vehicles – Ships – aviation accessories
Q. Foodstuff – drinks – cosmetics – paramedical – health hygiene
R. Sport – leisure
S. Practical Novelties
T. Publicity – printing – packaging
U. Games – toys
V. Protection of the Environment – Energy