English
中文
-
How Often Should a Formaldehyde Removal Filter Be Replaced?
There is no single replacement interval for a formaldehyde removal filter. The right schedule depends on how long ago the space was renovated, the condition of the filter, and indoor formaldehyde test results.
-
An Introduction to Air Filters for High-Speed Rail Stations
High-speed rail stations are enclosed, high-traffic spaces, so their air filters must handle large air volumes and multiple pollutants. A multi-stage filtration system helps maintain indoor air quality and stable HVAC operation.
-
Core Advantages of High-Temperature Filters in Industrial Manufacturing
In chemical, metallurgical, and energy plants, high-temperature filters maintain stable efficiency under extreme heat and harsh operating conditions.
-
What Is the Difference Between HEPA and ULPA Filters?
HEPA and ULPA filters differ in filtration accuracy, efficiency standards, application requirements, cost, and airflow resistance.
-
Typical Applications of Coarse, Medium-Efficiency, and HEPA Filters
Coarse, medium-efficiency, and HEPA filters each target different particle sizes and serve different HVAC, industrial, medical, commercial, and household applications.
-
How Are Air-Filter Consumables Classified by Efficiency?
Air-filter consumables are commonly divided into coarse, medium, high-efficiency (HEPA), and ultra-high-efficiency (ULPA) classes under major international standards.
-
Why Air Filters Inside Central Air-Conditioning Units Matter
Air filters inside central AC units trap airborne pollutants, support efficient operation, and protect key components, helping maintain cleaner indoor air and reliable system performance.
-
Understanding Filter Media in Fresh-Air Air Conditioners
Filter media are the heart of fresh-air air conditioners. Learn how prefilters, HEPA media, and activated carbon work, when to replace them, and how to maintain them.
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
