44100000 Office machines and their supplies and accessories
44102000 Laminating supplies
44102001 Lamination film
41110000 Measuring and observing and testing instruments
41111500 Weight measuring instruments
41111510 Postal scales
44120000 Office supplies
44121500 Mailing supplies
44121600 Desk supplies
44121623 Mechanical letter opener
81100000 Professional engineering services
81101700 Electrical and electronic engineering
81101709 General office equipment maintenance