1. Low-temperature filter specifically for cold storage warehouses, designed to withstand low temperatures (-20°C). It is suitable for cold storage warehouses, with the HEPA layer filtering out warehouse dust and ice crystal particles, and the activated carbon layer adsorbing warehouse odors and refrigerant smells. The filter frame is made of low-temperature resistant material and is not prone to cracking. It is compatible with cold storage warehouse air purifiers, and continuous operation can improve the air quality in the warehouse and protect the health of workers. 

2.Industrial-grade dust removal filter, made of polyester fiber + glass fiber composite material, resistant to high temperatures and humidity, suitable for factory workshops, laboratories and other environments with a lot of dust. The filtration efficiency for dust and fiber debris is over 95%. The filter frame is made of metal, resistant to pressure and deformation, and can be repeatedly washed and used, reducing long-term usage costs. Customized sizes are available, compatible with large industrial air purifiers, with low air resistance that does not affect equipment operation efficiency, effectively improving workshop air quality and reducing the harm of dust to workers' health.

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.Equipped with an H13 grade HEPA high-efficiency filter layer, it can deeply intercept 99.97% of particles with a diameter of 0.3μm or larger, including PM2.5, pollen, pet dander and second-hand smoke residue. Combined with a high-density activated carbon layer, it can strongly adsorb formaldehyde, benzene and other harmful gases. The dual filtration structure achieves whole-house air purification. The food-grade ABS frame is impact-resistant and does not deform. The sealing strip is tightly attached to the body to prevent air leakage. It is compatible with mainstream brand air purifiers and has a long service life of 3 months, offering better cost performance than original filters.