https://www.chiangraitimes.com/chiang-rai/chiang-rai-plastic-waste/
Chiang Rai City Turns Plastic Waste into Diesel and General-Purpose Oil
Sep 19, 2025 - CHIANG RAI - The City of Chiang Rai has become home to Thailand’s first smart city municipal project, turning plastic waste into fuel
chiang rai cityplastic wastegeneral purposeturnsdiesel