This is not enough yet. According to statistics, the main source of fine dust pollution actually comes from human beings. After people move outside, dust will always stick to their clothes, and the keratin layer of their skin will also fall off. If they work in a clean room like this, 'clean' becomes 'dirty'! Therefore, we have strict hygiene requirements for employees working on the production line, including changing work clothes, wearing head covers, etc., to ensure that the workshop is spotless and meets the standards of a clean room.