Shenzhen Foretell Intelligent Equipment reviews
Shenzhen, Guangdong, China
It is very hard to find touch displays that are 42 inches in size for under $3000, getting them for $500 is a bargain. No warranty at this price. I do suppose you can just buy extra and replace them as needed they are so cheap.
The interactive whiteboard aka touchscreen TV are excellent for demonstrations it is just they cost too much typically. The ones sold here are good, but it is just a display and you need to use your own OS. I wish they had ones with built in windows 8 or 10