1. High-density pre-filter, made of 500g/㎡ polyester fiber material, 30% denser than ordinary pre-filters. It can filter hair, cotton fluff, and large dust particles, protecting the HEPA filter from clogging and extending the overall filter core's lifespan. It is washable, and the filtration efficiency remains unchanged after cleaning. Compatible with the pre-filter layer of various purifiers, it can be replaced separately at a low cost, making it a "durable pre-filter guardian" for household purifiers.

2.Washable long-lasting filter. The pre-filter is made of electrostatic cotton material and can be washed over 50 times. The HEPA layer is made of PTFE-coated material, which is waterproof and oil-resistant, and the filtration efficiency does not decline after cleaning. The activated carbon layer is detachable for cost-effective replacement. It is suitable for household economy air purifiers and has an overall lifespan of up to 1 year, significantly reducing replacement costs. It is environmentally friendly and cost-effective, making it a good choice for families seeking high value for money.

3.Anti-oil fume filter for kitchens. The pre-filter is a metal mesh that blocks oil fume particles and kitchen dust. The HEPA layer filters tiny harmful substances in the oil fume, while the activated carbon layer adsorbs oil fume and gas odors. The filter surface is treated with an anti-oil coating to prevent oil stains and is easy to wipe clean. 16. Compatible with wall-mounted kitchen air purifiers, it is resistant to high temperatures and corrosion, with a lifespan twice as long as ordinary filters. It effectively improves kitchen air quality and reduces the harm of cooking fumes to family health.

4.Specialized filter for gyms, designed for the large breathing volume during exercise and the easy generation of sweat odor in the environment. The HEPA layer filters dust and dander generated during exercise, and the activated carbon layer is added with natural fragrance factors to remove sweat and rubber odors while releasing a fresh scent. The filter is resistant to high air volume impact and is compatible with large gym air purifiers. It has a lifespan of up to 3 months, which is more durable than ordinary filters, allowing you to breathe fresh air during exercise and enhancing the exercise experience.