http://kfqgw.beijing.gov.cn/hdjl/cjwt/202108/t20210827_2477934.html
更換空調加熱係統中的過濾器,選擇濾粉塵黴菌等級的 FPR8-9
Best Air Filters: FPR 8-9 filter out:
- Large particles like household dust, lint, dust mites, pollen and pet dander
- Small particles like bacteria and mold spores
- Smoke, smog, microscopic allergens plus particles that can carry viruses