Fan filter units failed quality tests

Updated 2018-02-27 09:40:02

All fan filter units tested by Shanghai's quality watchdog failed tests for substandard air purifying effect or potential safety hazards, officials warned.

Fan filter units — a type of motorized air filtering equipment — are widely used in industrial fields and many businesses claim they perform better to purify air than common air purifiers used at home.

On online shopping sites like Tmall and, customers have a choice of nearly 1,000 types of fan filter units for sale, priced between 1,500 yuan (0) and 2,500 yuan. Some types sold more than 1,000 monthly. Many claim they have a clean air delivery rate of over 1,000 cubic meters per hour — an index measuring the capability of purifying PM2.5 and formaldehyde.

However, tests found that nine out of the 13 models randomly bought on Tmall and have no effect in purifying formaldehyde, and the best only managed to score 30 percent of the effect compared with what is indicated on its label, according to the Shanghai Quality and Technical Supervision Bureau.

The purifying effect of PM2.5 tested on 11 units was under 60 percent of what's indicated on the label.

All the units were also found unsafe because of design flaws with some electrical parts not fully protected, the bureau said. The fan filter units included ACZ, Wantu, Aireer and Duolang brands.

Also in the News

Nicole Kidman Recalls Oscar Glory: Loneliest Time
Showbiz2016/06/16 13:58March 23 2018 21:06:50

Nicole Kidman Recalls Oscar Glory: Loneliest Time

Attending Shanghai International Film Festival, Nicole Kidman talks about her role in "Grace of Monaco".

Labor Day Travel Peak Starts
Also in the News2014/05/01 12:16March 23 2018 21:06:50

Labor Day Travel Peak Starts

Johnny Depp Delivers a Speech 'Evolve the Future' in 'Transcendence'
Also in the News2014/04/18 13:18March 23 2018 21:06:50

Johnny Depp Delivers a Speech 'Evolve the Future' in 'Transcendence'

Hollywood star Johnny Depp's speech in the upcoming new film "Transcendence" has been disclosed on Friday, April 11th.

Most Watched

China World Business Sports Showbiz Audio
C4 My Chinese Life The Sound Stage China Revealed Showbiz Video Travel Video
China World Fun Travel Entertainment Sports
Beijing Shanghai Guangzhou
Live Music Opera & Classical Movies Traditional Shows Exhibitions
Learn Chinese:
Chinese Studio Living Chinese Everyday Chinese Just For Fun Chinese Culture Buzzwords