Siam Trading Company imports cheap junk from China on a large scale, then they add a USP (Unique Selling Point) to the product and sell it in gadget stores. This time it was a pencil sharpener. The USP was to be invented by the student himself. That's why it became Rex, a pencil sharpener that sharpens erasers as well as pencils. The text on the back of the box explains the entire theme & idea of this package perfectly!