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- QCVNS UPDATED:
+ NATIONAL TECHNICAL REGULATIONS ON INDUSTRIAL WASTE WATER
+ NATIONAL TECHNICAL REGULATION ON SURFACE QUALITY
+ NATIONAL TECHNICAL REGULATIONS ON QUALITY OF UNDERGROUND WATER
+ NATIONAL TECHNICAL REGULATION ON AIR QUALITY VIEW
+ NATIONAL TECHNICAL REGULATIONS ON LIMITATIONS OF SOME HEAVY METALS IN LAND
+ NATIONAL TECHNICAL REGULATION ON NOISE
+ NATIONAL TECHNICAL REGULATION ON SEAFOOD PROCESSING WATER
+ NATIONAL TECHNICAL REGULATION ON INDUSTRIAL EXHAUST GAS FOR DUST AND ORGANIC SUBSTANCES
+ NATIONAL TECHNICAL REGULATION ON DANGER FOR WASTE FROM THE WATER TREATMENT PROCESS