1. Intelligent sensor filter, equipped with a dust sensor that automatically reminds of replacement when the filter is clogged, eliminating the need for manual checks. The HEPA layer is H13 grade for high-efficiency filtration, and the activated carbon layer adsorbs formaldehyde and odors. Compatible with intelligent purifiers. The filter is linked with the purifier, automatically reducing air volume to protect the equipment when clogged. 

2.Specialized filter for photography studios, designed to handle photography dust and background cloth debris. The HEPA layer filters out fine dust, preventing it from adhering to lenses and props. The activated carbon layer removes formaldehyde (from new construction) and prop odors in the studio. The filter operates silently, not affecting audio recording during photography. It is suitable for small purifiers in studios and lasts up to 4 months, helping photographers create a clean environment

3. Specialized filter for nail salons, designed for the smell of nail polish and nail polish remover. The activated carbon layer is added with adsorbent to quickly decompose chemical odors, and the HEPA layer filters nail dust and glitter debris. The filter operates silently without affecting nail salon services. It is compatible with desktop air purifiers in nail salons and can continuously improve the air quality in the salon, reducing the irritation of chemical odors to staff and customers. 

4.Specialized filter for tobacco stores, the activated carbon layer uses high-capacity activated carbon to adsorb the smell of tobacco, and the HEPA layer filters tobacco dust. The filter is resistant to high-concentration tobacco odor pollution and has a lifespan twice as long as ordinary filters. It is compatible with wall-mounted air purifiers in tobacco stores and can continuously keep the air fresh in the store, reducing the irritation of tobacco odor to staff.