Section categories

Electrotechnical [0]	Ecological [0]
Refrigerating [0]	Chemical [0]
Packing [0]	Trade [0]
Textile [0]	Shipbuilding [0]
Engineering Tools [0]	Farming [0]
Welding [0]	Poultry [0]
Bearings [0]	Food [0]
Heating and Pumping [0]	Oil [0]
Metallurgical [0]	Metal-working [0]
Engineering [0]	Elevators and Lifts [0]
Laboratory [0]	Tools [0]
Railway [0]	Woodworking [0]
Material Mining [0]	Gas and Fuel [0]
Weighting [0]	Ventilating [0]
Aeronautical [0]