The Department of Agricultural Extension highlights a 620-rai mangosteen cooperative in Nakhon Si Thammarat as a model for quality agricultural production and value-added processing. The group employs modern technology (drones, soil moisture sensors), implements systematic quality control and direct auction systems to ensure fair prices, and develops derivative products (mangosteen wine, jelly, juice) that extend shelf life and open new revenue streams. Out-of-season production commands premium prices (92 baht/kg average vs. 24 baht/kg in-season), demonstrating the commercial viability of coordinated agritech adoption for smallholder competitiveness.