Dispensers dispense soap & are by the sink(s).
One can find information on toilet paper dispensers at many companies which distribute janitorial supplies. Wesclean and Uline both have many styles of toilet paper dispensers one can choose from
Commercial toilet paper dispensers are nice since you don't have to change out the roll as often. Many people enjoy having commercial toilet paper dispensers in their homes.
Check amazon! I found some there
There are many different websites out there for toilet stalls, like www.abspartitions.com which offers many different styles and materials. Also, there is onepointpartitions.com, and they ship anywhere.
Toilet stalls can be purchased through any bathroom fixture and fitting supplier. There are various types available and the following company has a good selection: http://www.manningmaterialsinc.com/
A ambulant toilet is a toilet that is accessible to those that are disabled. These toilets are mandatory in many stores and businesses. They include support rails and are inside of larger stalls then regular toilets are.
Bathrooms on an airplane are often small, and include a small toilet, sink and paper towel and soap dispensers. Any waste from the toilet is stored in a special tank on the airplane which is emptied after each landing.
If you think about this for a moment, you can figure it out. Are you usually standing up or sitting down when you need toilet paper? That would be why they are positioned so that you can easily reach them when sitting down.
The best place to view more information about a toilet paper dispenser would be to check and compare websites. The primary differences between toilet paper dispensers are style of the design and functionality. One example would be a commercial toilet paper dispenser would not be ideal for home use due to the size and unconventional toilet roll size.
Alsco provides tools that are used in hospitals to keep things hygienic. It provides items such as touch free soap dispensers, touch free paper towel dispensers, automatic toilet cleaners, and other things to help keep a hospital clean.
I can't quite understand the first part of your question. For the second part of your question: Toilet roll dispensers vary, but a simple variant would involve a bar, which is fixed (like an axle), surrounded by the toilet roll, which rotates (like a wheel).
Dispensers are manufactured in companies, such as Brentoma, Aquaid and Wizcom. Water dispensers come in different sizes and with or without cooling systems.