35 marketing of paper, paperboard, cellulose stuff and glass.
37 Industrial cleaning services; construction and repairing of environmental technical installations, especially dumping grounds, sewage treatment plants and channel plants as well as glass processing plants.
39 Collecting, transporting and storing of waste and valuable materials.
40 Waste disposal, inclusive of sorting out waste, able for recycling, reclamation of valuable materials, treating of waste by chemical, biological, physical and thermical processes, disposal of toilet cabins, toilet cars and toilet containers as well as waste containers, operation of processing plants for paper, paperboard, cellulose stuffs and glass as well as special wastes.
42 Execution of chemical, analytical and toxicological examinations of all kinds, qualitative and quantitative analysis and evaluation of soil, waters, gases and waste products, microbiological examinations, inclusive of microbial clearing measure, environmental technical consultancy, planning and development of environmental technical proceedings and installations, especially in the field of environmental hygiene, redevelopment measure, avoidance of waste, raw material recycling and power supply; projecting and operation of environmental technical installations, especially dumping grounds, sewage treatment plants and channel plants, storing of waste, rental and erection of toilet cabins, toilet cars and toilet containers as well as waste containers.