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What Does Geely's AQS Air Quality Management System Do?
Geely builds its vehicles around an all-around healthy cabin concept. Its AQS system, CN95 cabin filter and negative-ion purifier work together to block and remove pollutants.
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How BYD's Green Clean System Purifies Air and Blocks Germ-Carrying Particles
BYD's Green Clean system uses a melt-blown filter and the vehicle blower to remove airborne particles. Medical-mask-grade filtration helps block germ-carrying particles from entering the cabin.
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How Does BYD's PM2.5 Green Clean System Work?
BYD's Green Clean system combines a PM2.5 sensor, high-efficiency filter, negative-ion brush plate and electrostatic filter to remove dust, odors, microorganisms and fine particles from cabin air.
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Hospital Central HVAC Hygiene Requirements and Department-Specific Design
Hospital HVAC design must control filtration, outdoor-air supply, pressure gradients and airflow direction. Requirements vary across outpatient areas, fever clinics, wards, isolation rooms and ICUs.
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How 100% Outdoor-Air HVAC Systems Work: Advantages and Disadvantages
A 100% outdoor-air HVAC system conditions outdoor air, supplies it to the room and mechanically exhausts it without recirculation. It limits cross-contamination but consumes substantial energy.
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How Typical Semi-Centralized Air-Conditioning Systems Work: Advantages and Drawbacks
Typical semi-centralized air-conditioning systems combine room terminals with centralized fresh-air treatment. This article explains their operation, benefits, limitations, and hygiene risks.
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How Typical Centralized Air-Conditioning Systems Work: Pros, Cons and Hygiene Risks
A centralized all-air system filters and conditions outdoor and return air in a central unit. Learn how it works, its main benefits and limitations, and the hygiene risks of recirculation.
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Types of Filters in Hospital Central Air-Conditioning Systems
Hospital air-conditioning systems can be classified by equipment centralization, heat and moisture transfer medium, and clinical application. This overview explains the main configurations.
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
