English
中文
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Do Photocatalytic Filters Need Light to Remove Formaldehyde? Do They Work at Night?
Photocatalytic filters rely strongly on light. They work best under UV, perform less effectively under ordinary lamps, and do almost nothing in complete darkness unless specially modified.
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Humidity vs Dry Air: Do Anti-Allergen Filters Lose Effectiveness, and Can Their Coatings Fail?
Very dry and very humid air can both weaken anti-allergen filter coatings. Plant-extract and silver-ion coatings respond differently, so climate and maintenance matter.
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Can Extreme Winter Cold or Summer Heat Disable a Vehicle Smog Filter? How Do Materials Differ?
Extreme cold and hot parked-car temperatures can weaken vehicle smog filters. Polypropylene, glass fiber, and bio-based media differ greatly in durability and efficiency loss.
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How Matching Pre-Filter and Medium-Efficiency Filter Airflow Extends HEPA Filter Life
Correctly matching airflow across pre-, medium-, and high-efficiency filters lets upstream stages share the particle load, reducing HEPA clogging and extending service life.
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Effect of 50 vs. 100 Pleats in Bag Dust Filters on Dust-Holding Capacity, Resistance, and Filtration Efficiency
Compare how 50 versus 100 pleats per meter affect filter area, dust capacity, pressure drop, particle efficiency, and airflow distribution.
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Long-Term Efficiency of Catalytic Formaldehyde Filters vs. Adsorptive Activated-Carbon Filters
Over a year, catalytic formaldehyde filters retain far more removal efficiency than activated carbon, which saturates and can release captured pollutants.
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Basic Performance and Applications of Automotive Anti-Smog Filters
A technical overview of automotive anti-smog filters, including particle and VOC removal, pressure drop, service life, vehicle fitment, and maintenance.
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How Bag-Type Dust Filters Work
Bag filters combine interception, inertial impaction, diffusion, and optional electrostatic capture with a large media area for low resistance and high dust capacity.
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
