Shenzhen, the most important is the clean room to prevent dust from entering the clean room, let the dust generated, not the principle of residual dust. In the clean room maintenance and management, should note the following: 1. The person or goods entering the clean room management principles must be observed before the clean room, to avoid the unnecessary items into the work area, to go through the air shower room air shower, to clean effect, before entering. Therefore, people walking in the area will produce pollutants and dust, must be regularly cleaned every corner of the area, check the performance of machinery and equipment to ensure the quality and safety of the work efficiency and product. 2. For different management objects, its basic principles and management of content is not the same. Cleanliness of the clean room should be monitored regularly, usually defined as June 3 to detect once (conditional customers they have instruments to detect once a week). 3. From the aspect of maintenance, the filter with increased dust collecting system resistance increases, the filtration efficiency will be reduced; then the interior pressure and cleanliness would be difficult to guarantee. Maintain high efficiency filter efficiency (regular replacement filter) to prevent secondary dust flying, maintaining positive pressure workshop. 4. Employee walking into the clean room, the speed is not going too fast, walking fast, and will cause secondary ground dust flying, have a significant impact on plant cleanliness. Once positive values ??lower clean room, adjoining rooms will be larger than the positive value of clean room, then poured into the dust, affecting cleanliness.