Clean Rooms need to achieve extremely high cleanliness levels according to industry standards although specific sectors might have different requirements.

In an Electronic Cleanroom, the gray zone, as a special area, plays a crucial role. It not only physically connects the clean area with the non-clean area, but also functionally plays the role of buffer, transition and protection.

Purification engineering specially designed room, regardless of how the external air conditions change, the room has to maintain the original set requirements of cleanliness, temperature and humidity, and pressure and other properties.

ISO Cleanrooms and GMP Cleanrooms are cleanrooms under two different standards, designed and operated according to ISO standards and GMP specifications respectively.