General items: technical services, technology development, technical advice, exchange, technology transfer, technology promotion; mechanical equipment development; software development; generic equipment manufacturing (other than special equipment manufacture); mechanical parts, parts and components processing; generic spare parts manufacturing; shooting guns and similar equipment manufacturing; specialized equipment manufacturing for environmental protection; manufacturing of metal tools; rental of special equipment; rental of mechanical equipment; maintenance of electronic, mechanical equipment (other than special equipment installation services); sale of special equipment; sale of mechanical equipment; sale of machinery spare parts; sale of gas, liquids and pure equipment; sale of non-ferrous metal alloys; sale of spray guns and similar equipment; sale of metal tools; sale of specialized equipment; sale of specialized equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment on an autonomous basis of the law; sale of electrical equipment; sale of electrical equipment; sale of tobacco equipment on an autonomous basis of the law; sale of tobacco-based equipment; sale of tobacco-based equipment; sale of tobacco-based equipment; sale of tobacco-based equipment; sale of tobacco-based equipment under the law; sale of tobacco-based equipment; sale of