QCVN 12:2014/BXD
National Technical Regulation on Electrical Installations of Dwelling and Public Buildings
TCVN 4530:2011
Filling station - Specifications for design
QCVN 24:2016/BYT
National Technical Regulation on Noise - Permissible Exposure Levels of Noise in the Workplace
QCVN 2015/BCT
National Technical Regulation on Electric Power Technical
