however the policy changes a battlefield is business market , get succeed in the one level when , the business between Thai , Laos , begin vigorous go up business cost has increased quickly cause part economy , of Thailand northeast improve with , besides , Thai and Laos have the agreement join hands in the sense of differ , such as , friendship treaty , and Thai Laos cooperation , side tourism cooperation , the cooperation in the sense of electricity development in Laos , side tourism cooperation , side investment cooperation between Thai and Laos , checking exemption down the brand for ambassador passport , side sports cooperation and the agreement about friendship bridge , etc. , besides , have the explanation is related to with the foreign countries in a picture of geometry square , like to differ , which , help add Thai relation and Laos more and more , such as , the cooperation in the sense of the square , hexagon the economy , by building a road affects 4 countries , between Thai , Burma , Laos , and Chinese , the cooperation in transportation by land , by air , in basin of a river Mekong 6 countries part , and side navigation cooperation follows basin of a Mekong river while , on 4 countries , etc. , from economic business of Thailand relation , make Laos turns to take an interest trade with Thai , until make Thai is a pair trades that important most of Laos in now ,