Thailand and China have agreed to open direct air and sea routes between Thailand and Nanning city in Guangxi province to lower logistics costs and expand co-operation in trade and investment. Deputy Commerce Minister Alongkorn Ponlaboot disclosed the plan after leading a delegation to the fourth Pan-Beibu Gulf (PBG) Economic Co-operation meeting in Nanning last week. The countries agreed to promote road transport, especially on the R9 Highway linking Mukdahan province, Laos, Vietnam and Southern China, and the R12 Highway linking Nakhon Phanom, Laos, Vietnam and Southern China.