English
中文
-
Why Does an Air Purifier Filter Develop a Sour Odor?
A sour odor from an air purifier usually comes from an activated-carbon filter that is saturated or damp. Filter construction and carbon content also affect service life.
-
Key Performance Indicators for Air Purifiers
CADR, CCM, and filtration efficiency are three essential air-purifier indicators. Together they show purification speed, filter capacity, service life, and particle-removal performance.
-
The Air-Purifier Standard of Three Highs and One Low
The new air-purifier standard emphasizes high CADR, high CCM, high purification energy efficiency, and low noise. These four measures balance speed, capacity, energy use, and comfort.
-
Five Common Air-Purification Technologies and How They Work
Air purifiers commonly use amino-acid media, electrostatic collection, negative ions, activated carbon, or catalysts. Each method has distinct benefits, limits, and odor risks.
-
Four Key Dimensions for Evaluating an Air Purifier
Evaluate an air purifier by its certifications, purification methods, third-party test reports, and key performance parameters such as CADR, CCM, noise, coverage, and power.
-
When Should You Buy an Air Purifier for Your Home?
An air purifier may be worthwhile after renovation, for allergy-sensitive households, homes with pets, children or older adults, and locations near heavy traffic or industrial areas.
-
How Excess Indoor Formaldehyde Can Affect Health
Excess indoor formaldehyde can irritate the eyes and respiratory tract and may cause discomfort, nausea, coughing, chest tightness, wheezing, headaches, and other symptoms.
-
Main Sources of Inhalable Particulate Matter
Inhalable particles commonly come from fuel combustion, industrial emissions, boilers, household stoves, heavy-oil combustion, and vehicle exhaust.
Company landline
010-60770969
Sales Phone/WeChat: 15601000090
Purchasing Management/WeChat: 13331060986
Company Phone: 010-60770969
Address: Room 1708, Building B, Jinyu International Center, Longyu East 1st Road, Huilongguan Street, Changping District, Beijing
©2026 Kelan Filtration Technology(Beijing) Group Co., Ltd. All rights reserved
Record Number: Jing ICP No. 2022016037-2
Technical Support: Suyuan Network
Sales Phone/WeChat: 15601000090
Purchasing Management/WeChat: 13331060986
Company Phone: 010-60770969
Address: Room 1708, Building B, Jinyu International Center, Longyu East 1st Road, Huilongguan Street, Changping District, Beijing
©2026 Copyright Beijing Kelan Fresh Air Technology Co., Ltd. All rights reserved
Record Number: Jing ICP No. 2022016037-2
Technical Support: Suyuan Network
