Nong Khai is with the purchase - sale of goods between Thailand - Laos, the most in the Northeast. This is the second income of the province and also has plans to believe the economy to China as well
Nong Khai province as there are sources to buy-sell products between the Thai-Laos, most in the Northeast, which is the second income of the province and also plans to continue to enter into economic zones China.
Nong Khai Province is the source of the purchase-Sale of Goods between Thailand - Laos most in the Northeast, since income is the second Province, and also has a map to believe to the district economy to China.