2020年3月13日 星期五

Shanghai is using ultraviolet lights to disinfect buses. The process takes “5 to 7 minutes per bus” and kills “more than 99.9 per cent of viruses”.

Shanghai is using ultraviolet lights to disinfect buses. The process takes “5 to 7 minutes per bus” and kills “more than 99.9 per cent of viruses”.

沒有留言:

張貼留言