Office supplies on AliExpress belong to the category of "Office and School Supplies". This category includes various office stationery, office equipment, office furniture, school supplies, etc. The specific subcategories are as follows:

1. Office stationery: pens, paper, notebooks, folders, sticky notes, scissors, tape, etc.

2. Office equipment: printers, copiers, scanners, projectors, etc.

3. Office furniture: desks, office chairs, filing cabinets, bookshelves, etc.

4. School supplies: stationery, school bags, notebooks, painting materials, sports equipment, etc.

5. Office appliances: water dispensers, humidifiers, air purifiers, etc.

6. Office consumables: toner cartridges, ink cartridges, printing paper, etc.

7. Business gifts: business card holders, pen holders, desk calendars, etc.

On AliExpress, office supplies are widely welcomed by overseas buyers and have a large market demand. In the process of product selection and operation, sellers can make reasonable layout based on the above categories and subcategories, combined with their own advantages and market demand.