industry. It can filter multiple types of media, such as water vapor, oil mist, oil smoke, and foreign odor generated from machine processing. High-precision filter cartridge of HEPA can last up to 1~3 years, and usually suitable for clean room requirements. The patented design of one-piece body without any slits, so there is no oil leakage problem. The Internal structure patent certification with fool-proof design, and factory actual measurement can effectively reduce the labor injury situation.