Creating transport routes to be beneficial to trade between countries. Where the path is created, called land routes, R3B from Mae Sai-Ta KHI Lek-Kengtung-Jinghong city, La-dawn.
Building roads for the benefit of the international trade. This route was built called R3B overland route from Mae Sai - Tachilek - Kengtung - Downtown LA - Jinghong.
The road to benefit the international trade. Which route construction called the overland routes from famous R3B Sai - tha Cassia - Kengtung - city of La - rung