on a few of the most popular brands and found that all models were extremely efficient [...] beijing.ufh.com.cn 我曾亲自对市面上流行的 几个品牌的空气滤净器进行实际测试,结果发现在小面积空间且房门关闭的情况下,所有型号的空气滤净器都能够 滤掉95%至99%的污染颗粒。 beijing.ufh.com.cn ...