The filger systems trap and seal-in 100% of dust mites, pollens, ragweed, mold spurs, ... microscopic particles, bacteria, dust HEPA filtration systems trap and seal-in 100% of dust mites, pollens, ragweed, mold spurs ... causing agents, and 99.9% of pet dander.OEM are welcome, we can make according to the requirements of clients. vacuum cleaner filter