The cleanroom visual window installed within sandwich panel walls, designed with specific sealing and optical properties.

It allows external personnel to directly observe the internal working status, equipment operation, or production line processes of the cleanroom while ensuring the required cleanliness level, and facilitates necessary communication between inside and outside personnel through gestures or auxiliary tools.

It adopts an airtight design to maintain the internal temperature and humidity, ensure the stable pressure difference inside the clean room, and prevent external pollutants from invading through gaps.