List of Participants

P & S DESIGN CO., LTD.

PATHUMWAN INSTITUTE OF TECHNOLOGY

PEERAPAT TECHNOLOGY PUBLIC CO., LTD.

PETRO-INSTRUMENTS CORP., LTD.

POWER BEND CO., LTD.

PREMIER PRODUCTS PUBLIC CO., LTD.

PSV CREATION CO., LTD.

QUALITAT (THAILAND) CO., LTD.

RESEARCH AND SERVICE ENERGY CENTER, FACTORY OF ENGINEERING,RAJAMANGALA UNIVERSITY OF TECHNOLOGY THANYABURI (RMUTT)

RICH THAI INTERNATIONAL CO., LTD.

RIGHT REACTIVATION PUBLIC COMPANY LIMITED

ROJANAPAT ENGINEERING CO., LTD.

SANG CHAI METER CO., LTD.

SENTINEL SOLUTION (THAILAND) CO., LTD.

SIAM ENVIRONMENTAL TECHNOLOGIES PUBLIC COMPANY LIMITED

SIAMPATTANAPONG CO., LTD.

THAI BENKAN CO., LTD.

THAI DAIICHI INTERTRADE CO., LTD.

THAI HYDROLOGIST ASSOCIATION (THAI HYDRA)

THAI WATER WORKS ASSOCIATION (TWWA)

THAMMASORN CO., LTD.

TOHEI HYGENTE TRADING (THAILAND) CO., LTD.

TOYOBO (THAILAND) CO., LTD.

TREE YOKO PART., LTD.

TYBS INDUSTRY CO., LTD.