-Specific studies on the subject of environmental nganonamai Study on efficiency of wastewater by biological filtering system the air used to pin the floor sink. Using an oyster shell pleat mouth as an intermediary-Trained environmental management system ISO 14001 course. A worker.-Internships at hemaraj land and development public company limited. Hemaraj Eastern industrial estate in (map Ta phut) In the central part of the wastewater treatment plant and water supply, and nikhom Nam Sai of nikhom.
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