By virtue of Section 32 (4) and Section 34 of the Enhancement and Conservation of National Environmental Quality Act 2535, which contains provisions relating to the restriction of rights and liberties of the people sang, Section 29 and Section 33. Section 38, Section 41 and Section 43 of the Constitution of the Kingdom of Thailand. So permit by virtue of law. National Environment Board has issued standards for particulate matter less than 2.5 microns in the general atmosphere in the following.
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