all sanitation, containment and decontamination work during planned and unplanned events; all renovation work and all building-related activities such as study office, cost estimation, project and site management, work planning, representation of clients, design, implementation and maintenance of outdoor and indoor spaces; operation of a business in the field of cleaning, maintenance and disinfection of all premises and surfaces; execution and installation of horizontal and vertical signage panels, including floor marking (cf. statutes for full purpose).