The staffs working in the Namtaeryeong and the Gyeongbokgung station received relatively high radon exposure compared to the others. The reason is assumed that the stations are located on the granite, and particularly the Namtaeryeong station is deeper than the other stations.
UVGI Smartphone Sterilizer Slimbox Germicidal
- VectAir V-Screen® Urinal Screen HK$360
- WOOFAA Cee Wireless Air Monitor with Optional Gas Sensors HK$6,000 – HK$7,000