Transfer window is passed between the different levels of clean areas of special equipment items, in the low-pass items to prevent air directly into the high-clean areas clean area, effectively ensuring the cleanliness of the work area. Made of stainless steel, of electronic and mechanical interlock interlocking type, size according to user requirements. Features: ① workspace tops, stainless steel plates, flat and smooth. ② sampling vehicle is equipped with the Internet side of the door lock function, so that two can not be in the open. ③ also based on user needs, the installation of ultraviolet germicidal lamp, please specify when ordering.