HCM City takes steps to control noise pollution stockbot 0 469 2021.03.13 18:07 http://vietnamnews.vn/society/901737/hcm-city-takes-steps-to-control-n… + 189 https://vietnamnews.vn/rss/society.rss + 14 The HCM City Department of Natural Resources and Environment has proposed allowing the use of mobile apps to measure noise levels in residential areas.