การจัดการน้ำเสีย

FOCUS SERVICE COMPANY LIMITED

TTA GROUP 24 COMPANY LIMITED

L.P.S.UNITED (THAILAND) CO., LTD.

EASTERN GREEN CO.,LTD.

OZONE TERSMENT OZZONIC LIMITED PARTNERSHIP

TANK BAMBAT NUM SIA CO., LTD.

MICRO TECH ENGINEERING CO., LTD.

SAMCON WATER TREATMENT CO., LTD.

NAHM SAL ZAY CO., LTD.

PROSPER WATER TECH CO., LTD.

PAPOP BIOMETHANE COMPANY LIMITED

BIOTECH ENVIRONMENT CO.,LTD.

SENGQUAN TECHNOLOGY AND SERVICE CO., LTD.

T K INTER TRADE & SUPPLY COMPANY LIMITED

MINERAL INTER-TRADE CO., LTD.

ECOLOGY CLEAN CO., LTD.

RUNG RICH PHACHAROEN Co., Ltd.