Professional salon equipment is any equipment designed up to the exacting industry standards of the beauty business that is also intended to heavy use in a salon or spa environment. Because over its lifetime, a single piece of salon equipment will likely service hundreds or even thousands of clients they must be built of very durable and easily maintained materials in order to be considered professional grade. 
What kinds of equipment can fall into this category? Barber chair and styling chairs are on the top of the list. Likewise, shampoo bowls are considered a profession salon furnishing. Manicure and pedicure stations are also profession furnishings.
Professional furnishings are set apart by the fact that they typically come with long term warranties. Companies who make high quality products are not afraid to back them up with a good, solid guarantee of satisfaction. The wonderful thing about this is that it allows the business owners to save time and money by not having to replace equipment nearly as often as they would have to if they were using non-professional grade tools. However, professional grade salon tools are usually only sold to businesses, not individuals, as they are not meant for personal use.