• Manufacture of industrial equipment (16)
• Manufacture of mine, building and construction material machines (2)
• Wholesalers of Industry, material and equipment (826)
• Workshops (8)

Conveying engineering

• Conveyancy (194)
• Crane Sales & Hire (422)
• Lifts (222)

Hydraulics and pneumatics

• Chimney Sweeps (364)
• Hydraulics, equipment and devices manufacturers (333)
• Pump repair shops (2)
• Pumps (312)
• Rubber hoses manufacturer (26)
• Wholesalers of Boilers, containers and cisterns (66)

Mining industry

• Coal Supplies (637)
• Manufacture of basic metals (9)
• Marble (91)
• Mines (5)
• Natural stone (874)
• Sand, peat, clay (30)
• Stones, mining, quarries and block factories (149)

Optical devices

• Laser work and appliances (104)
• Optical devices and Photomechanics (404)
• Video and Audiovisual Equipment (614)

Production technology, finishing services

• Production technology, finishing services (9)

Shipbuilding

• Manufacture of Boats and ships, ship builders (412)
• Ship and Vessel-salvaging services (2)
• Wholesalers of Navigation and marine equipment (78)

Textiles, technical textiles, yarns

• Haberdashery wholesalers (43)
• Preparation and spinning of textile fibres (13)
• Sewing machines (449)
• Textiles and materials (4830)
• Weaving mills (195)
• Wool (420)