Hong Kong's roadside nitrogen dioxide

has never reached the Safe Standard for the last 20 years

Story posted on
9^th Jul, 2015

Hong Kong's roadside nitrogen dioxide

has never reached the Safe Standard for the last 20 years

testing

Features & Editorials

Reach annual maximum allowed exceedance within a month

Current Hong Kong Air Quality

Serious congestion
in need to tackle transportation issue

testing question 2
- Yes
- No
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