OTOP stands for "One Tambon One Product" where Tambon is a district. It was introduced many years ago with the idea to promote the special products from a district. And sometimes it really works, like here in Nan. At a small district office is a OTOP where is made a product line of natural herbal products for the care of your body. They produce & sell Body lotion, Bath gel, Facial gel, Toner, Hair Tonic and Salt Scrub (from Bo Klua). And much more. It was interesting to visit this place and to see how they make from leaves of a tree a shampoo. No chemicals! See OTOP Namkian. For more information about Nan province see Destination Travel Guide Nan.