42 Rental of environmental testing apparatus/instruments Testing/inspection of household electric appliances, electronic apparatus/instruments, electronic parts/fittings, electrical apparatus/instruments, optical appliances, parts of motor vehicle, clothing, furniture Testing/inspection of plastics, metals, rubber, wood, glass, fabric, paper and other materials Remote control and operating of environmental testing apparatus/instruments Remote control and operating of computers Consultation in environment testing Analysis of genes Synthesis of DNA Testing and research of environmental sanitation Environmental impact Assessment Testing and research of worker's safety in working environment Collection/destruction of domestic waste/trash Collection/destruction of industrial waste/trash Gardening (care for gardens and flower beds) Garden tree planting Fertilizer spreading Weed killing/prevention Vermin exterminating (for agriculture, horticulture or forestry) Geological survey/research/prospecting Designing of machinery, instruments and installations composed thereof Consultation in respect to performance and operation of computers, motor vehicles and other highly-professional machinery Computer programming/maintenance of computer software Testing/screening/research of pharmaceuticals/cosmetics/food Testing/research for prevention of pollution Electrical testing/research Civil engineering testing/research Testing/inspection/research for agriculture/livestock breeding/marine product industries Testing and research of machinery Rental of optical apparatus/instruments Rental of cameras Rental of measuring apparatus/instruments Rental of heating or air-conditioning equipment for industrial use Rental of ultrasonic testing apparatus/instruments Rental of beating apparatus Rental/leasing computers (including central) processing units/programmed-data-carrying electronic circuits, magnetic disks and tapes/other peripheral equipment) Rental of motors Rental of physical or chemical apparatus/instruments Rental of air conditioners Rental of freezing/refrigerating equipment