There are many factors affecting the airflow in the clean room, such as process equipment, personnel, clean room assembly materials, lighting equipment, etc. At the same time, for the production of equipment above the point of diversion of airflow should also be included in the consideration of factors. General operating table or production equipment and other surfaces of the airflow diversion point, should be set in the cleanroom space and the partition wall plate spacing 2 / 3 place, so that operators work, the airflow can be flowed from the inside of the process area to the operating area, and will be taken away from the dust; if the diversion point is configured in the process area in front of the will become an inappropriate airflow diversion, the majority of airflow will flow to the process area after the operation of the operator caused by the dust will be brought to the back of the equipment, the table will therefore be subjected to Dust caused by operator's operation will be carried to the back of the equipment, and the worktable will be contaminated, and the yield rate will be reduced. The obstacles such as working table in the clean room will have vortex phenomenon at the joint, and the cleanliness will be relatively poor in the vicinity. Drilling return air holes on the working table will minimize the vortex phenomenon; whether the selection of assembly materials is appropriate and the layout of the equipment is perfect is also an important factor whether the airflow will become a vortex phenomenon or not. Fan from the top of the FFU air intake, filtered by the primary filter, high-efficiency filters, filtered clean air in the entire air surface to 0.45m / s ± 20% of the wind speed uniformly sent out to the clean shed. The formation of uniform flow layer, so that the clean air flow is vertical unidirectional flow, thus ensuring the required cleanliness in the work area. Clean room is a simple clean room that can be quickly set up, with quick installation and short construction period, low price, easy to move and other characteristics, the main production process is controlled in a smaller environment is also the best choice for clean room design. Clean booth (simple clean room) (CLEAN BOOTH) is the most rapid and convenient establishment of a simple clean room, clean booth with a variety of cleanliness levels and space with the design and production according to the needs of the use of the demand, so it is easy to use the flexibility of the installation of large and easy to install and short construction period as well as removable for its main features, clean booth at the same time can be used for the general level of clean room in the local area in need of a high degree of cleanliness to reduce the cost of local additions to the place. The clean room can also be used for localized areas where high cleanliness is required in general grade clean rooms to reduce costs by making local additions. Clean room is a kind of air purification equipment which can provide local high clean environment. The clean room is mainly composed of box, fan, primary air filter, damping layer, lamps and so on, and the shell is sprayed with plastic. The product can be both hanging and ground support, compact structure, easy to use. It can be used individually or connected to form a band clean area.