Abstract:
This research aims to determine the optimal locations for rubber processing factories in the northeastern region of Thailand and to design efficient transportation routes within the supply chain network for rubber export. The study employs Geographic Information Systems, along with the Center of Gravity and Location Allocation methods, to identify the most suitable factory locations under constraints of distance, time, and cost. The analysis revealed that expanding factory locations in the upper northeastern provinces such as Sakon Nakhon, Bueng Kan, Nong Khai, Udon Thani, and Loei and in the lower northeastern provinces such as Buriram and Ubon Ratchathani can significantly reduce transportation distance and time. Additionally, land cost was considered as a key factor influencing investment decisions. The findings enable the selection of factory sites that are efficient and aligned with current and future market demand. This research provides valuable information for entrepreneurs and investors in planning the development of the rubber industry, particularly in factory expansion and transportation network design, to enhance export potential. The study also aligns with international research that applies Geographic Information Systems for sustainable logistics and supply chain management.