• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
China

As China Chokes on Pollution, a Top Air Filter Fails Inspection

By
Scott Cendrowski
Scott Cendrowski
Down Arrow Button Icon
By
Scott Cendrowski
Scott Cendrowski
Down Arrow Button Icon
February 5, 2016, 6:38 AM ET
China's Xiaomi Breaks Into Tablet Market
BEIJING, CHINA - MAY 15: (CHINA OUT) Xiaomi CEO Lei Jun speaks during a product launch on May 15, 2014 in Beijing, China. Privately owned Chinese electronics company Xiaomi has lauched its first tablet and low-price 4K TV on Thursday. The newly launched "Mi Pad" is looking to shake up the tablet market to rival Apple's iPad mini with a new low-price slate set. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)Photograph by ChinaFotoPress/Getty Images

Heading into the Monday start of Chinese New Year, when markets and businesses close for a week, smartphone startup Xiaomi is hoping to avoid any more criticism.

Its strategy for more than a year has been to use its strong smartphone brand in China, where it ranked first in market share last year, to sell a range of home gadgets under the Xiaomi banner, from a smart TV to fitness band to air filter. Over the past week, the last offering, air filters, has been creating headaches.

The popular devices, which at $140 sell for a fraction of the price of other air filters used inside homes across Chinese cities to combat the notoriously noxious air, are no longer available on the country’s top online shopping sites, Alibaba’s Tmall and JD.com. The listings now product error messages or a note saying they’ve been removed, as Chinese news site Sina.com first reported. It’s as if GoPro suddenly pulled its cameras from Amazon.

The reason may be a failed government inspection in January. The Shanghai Quality and Technical Supervision department said Xiaomi’s air filter had a “grave quality problem” with the amount of clean air it produced, specifically with a measurement known as the clean air delivery rate (CADR).

“CADR can be regarded as the most important and significant indicator to evaluate an air purifier’s quality,” says Zhao Bin, a professor at Tsinghua University’s department of building science who focuses on indoor air pollution. “If an air purifier’s CADR has a ‘grave quality problem,’ it would definitely fail to reduce pollutants effectively.”

Xiaomi’s response is that the rate used by the Shanghai inspector, which was not disclosed, was a recommended standard, not a compulsory standard. Xiaomi also posted an earlier test completed before the air filter was first sold in December 2014 that showed the clean air delivery rate (CADR) at 409 cubic meters per hour and 406.6 cubic meters per hour, rates that compare favorably to other brands.

Nevertheless, either Xiaomi or Xiaomi’s partner Zhimi, which manufacturers the air filter, is pulling it from resellers until the tests are sorted out. A Xiaomi spokeswoman didn’t respond to a request for comment Friday.

It is an undeniable blow for Xiaomi, which has staked its reputation on devices made by others.

Hundreds of critical comments piled up on Chinese social media in response to the Shanghai test, some referencing earlier problems with the air filter. Late last year, stories appeared first on social media, then in the Chinese state press, accusing Xiaomi of fraud. Users who hadn’t first removed the plastic covering from the filter said the Xiaomi air sensor displayed decreasing rates of inside air pollution.

The latest news comes after Xiaomi failed to reach its smartphone sales target last year of 80 million sold and analysts are questioning the startup’s $45 billion valuation.

Xiaomi must be ready for the week-long holiday.

With reporting by Tian Chenwei.

About the Author
By Scott Cendrowski
See full bioRight Arrow Button Icon

Latest in International

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Lists Calendar
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Lists Calendar
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Most Popular

‘Something sinister’: What we know about the FBI probe into dead and missing scientists linked to space and military industries
Economy
‘Something sinister’: What we know about the FBI probe into dead and missing scientists linked to space and military industries
By Jim EdwardsApril 22, 2026
24 hours ago
The tables have turned: Florida and Texas are the biggest losers in the housing market as Ohio emerges a surprise winner
Real Estate
The tables have turned: Florida and Texas are the biggest losers in the housing market as Ohio emerges a surprise winner
By Sydney LakeApril 21, 2026
2 days ago
'Something sinister could be happening': FBI looks into dead or missing nuclear and space defense scientists tied to NASA, Blue Origin, and SpaceX
Politics
'Something sinister could be happening': FBI looks into dead or missing nuclear and space defense scientists tied to NASA, Blue Origin, and SpaceX
By Catherina GioinoApril 21, 2026
2 days ago
John Ternus, the man stepping into Tim Cook and Steve Jobs' shoes, is a 25-year Apple veteran with zero LinkedIn posts
C-Suite
John Ternus, the man stepping into Tim Cook and Steve Jobs' shoes, is a 25-year Apple veteran with zero LinkedIn posts
By Kelvin Chan and The Associated PressApril 21, 2026
2 days ago
Palantir published a mini manifesto calling some cultures ‘harmful’ and ‘middling’ and said Silicon Valley has ‘a moral debt’ to the U.S.
AI
Palantir published a mini manifesto calling some cultures ‘harmful’ and ‘middling’ and said Silicon Valley has ‘a moral debt’ to the U.S.
By Marco Quiroz-GutierrezApril 22, 2026
1 day ago
$166 billion in tariff refunds just became available, but small businesses may already be at a disadvantage
Law
$166 billion in tariff refunds just became available, but small businesses may already be at a disadvantage
By Sasha RogelbergApril 20, 2026
3 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.