Proposals to tighten maximum concentrations of two key pollutants – fine suspended particles and sulphur dioxide – as part of Hong Kong’s new set of “air quality objectives” are too conservative, acco…
( read original story …)
The HongKong News
Proposals to tighten maximum concentrations of two key pollutants – fine suspended particles and sulphur dioxide – as part of Hong Kong’s new set of “air quality objectives” are too conservative, acco…
( read original story …)