The pass box is a kind of assistant equipment installed between the area which has different clean levels of clean room, is mainly used to transfer goods. It can reduce times of opening door, prevent the air convection between different rooms and minimize the pollution extent.

The pass box is a kind of assistant equipment installed between the area which has different clean levels of clean room, is mainly used to transfer goods. It can reduce times of opening door, prevent the air convection between different rooms and minimize the pollution extent.

The pass box is a kind of assistant equipment installed between the area which has different clean levels of clean room, is mainly used to transfer goods. It can reduce times of opening door, prevent the air convection between different rooms and minimize the pollution extent.

The pass box is a kind of assistant equipment installed between the area which has different clean levels of clean room, is mainly used to transfer goods. It can reduce times of opening door, prevent the air convection between different rooms and minimize the pollution extent.

The pass box is a kind of assistant equipment installed between the area which has different clean levels of clean room, is mainly used to transfer goods. It can reduce times of opening door, prevent the air convection between different rooms and minimize the pollution extent.

The pass box is a kind of assistant equipment installed between the area which has different clean levels of clean room, is mainly used to transfer goods. It can reduce times of opening door, prevent the air convection between different rooms and minimize the pollution extent.