1) sewage management development model to new model
.-Waste water treatment system, caught in a new format. What is important is the leading manufacture lagging Greek ภัณ์ดั. Make people aware of the importance of treatment and performance. Before a draft.
-Using the Business Model with apot. Quite possible due to difficult khong is an organization that serves the public and non-profit, which would conflict with the requirements of the governmental services fee charged by
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