Central Wastewater Treatment Plant No.4 of Amata City Chonburi Industrial Estate, Wastewater Treatment Plant of Asia Industrial Estate (Rayong), Central Wastewater Treatment Plant of Saensuk Municipality, and Central Wastewater Treatment Plant of Amata City Rayong - 2 (Nong Lalok)

Water Treatment for Maptaphut Industrial Estate (I-8), Recycled Water Plant for Laem Chabang Industrial Estate, Reclaimed Water System Project No.3 of Amata City Chonburi Industrial Estate, and High-Quality Water Production Plant for Sahaphat Group Industrial Park, Chonburi

Flood prevention in Rayong through Thap Ma-Nam Hu Project, Industrial Water Treatment Plant for Lad Krabang Industrial Estate, Water System Control and Management Project for Suvarnabhumi International Airport, and the project to operate and maintenance wastewater treatment facility, machines and equipment, and sanitary system in Phuket International Airport.