checkpoint turned to dominate with 77.88% share, followed by Padang Besar border checkpoint (20.04%), and Sungai-Golok border checkpoint (1.13%) and the rest shared by four other border checkpoints. The major imported goods through Sadao border checkpoint were electrical parts, parts and accessories of machinery, auto processors, plastic products, synthetic rubber and chemical fertilizers (Department of Customs of Thailand 2012a).