English
中文
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How Do Activated-Carbon Filters Adsorb Pollutants So Effectively?
An explanation of how pore networks, pore-size matching, van der Waals forces, and surface functional groups give activated-carbon filters strong adsorption capacity.
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Screen Filters: Definition, Types, Advantages, Limitations, and Applications
A practical overview of screen filters, including classifications by medium, structure, and precision, along with their benefits, limitations, and common uses.
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How to Choose Filter Media for a Primary-Efficiency Filter
A guide to selecting primary-filter media by dust concentration, particle size, temperature, corrosion resistance, cost, and cleaning requirements.
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Simple Air Purifier Buying Tips
A straightforward five-point guide to choosing an air purifier by household needs, CADR, CCM, noise, smart controls, sensor performance, size, and appearance.
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What Does China's National Standard for Air Purifiers Cover?
An accessible explanation of the national-standard indicators for air purifiers: CADR, noise, applicable area, purification energy efficiency, harmful-substance emissions, and microbial removal.
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Air Purifier Buying Guide
Four essential checks for choosing an air purifier: household needs, room size and CADR, lifetime cost and CCM, and the activated-carbon and HEPA filter configuration.
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What Is the Difference Between a CR Box, an Air Purifier, and an Air Disinfection Unit?
CR boxes, air purifiers, and air disinfection units improve air quality in different ways. This article compares their structures, operating principles, and suitable uses.
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What Is CADR?
CADR, or clean air delivery rate, indicates how much clean air an air purifier supplies under standardized AHAM testing. A higher value means stronger purification performance.
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
