According to the high-efficiency filter national standard GB13554-92 and GB13554-2008 to formulate quality standards: [Packaging] The outer packaging is intact, no hit, cracking traces; internal packaging (plastic bag) should be intact, foam angle, foam board Complete, model, air volume, airflow flow direction should be complete, accurate, complete, and product certificate is available. [Framework] High-efficiency filter frame surface has no obvious pollution, no unevenness, scar, no scratch, coating, no flakes, no burr, rust, high-efficiency filter frame (on one side of the viscosity) should be flat, no significant deviation; The high-efficiency filter frame strength should meet the requirements, such as placing the surface, shake, the frame has no deformation, and the shake occurs. [Seam] The seal between the high-efficiency filter paper and the frame should be strict, no gaps and holes; the sealing strip between the high-efficiency filter and the frame, should be connected, unfained, visual flat, high efficiency filters and boxes

The application of clean technology has experienced the development of more than half a century, and its application range is increasingly wide and technical requirements are more complicated. Currently, its representative application is the microelectronics industry, medical and health and electronic industries. Its application areas: 01. Microelectronics industry 02. Semiconductor manufacturing 03. Pharmaceutical industry 04. Optical industry 05. Biotechnology Industry 06. Pure chemical reagent manufacturing 07. Micromechanical processing industry 08. Hospital and other health care institutions 09. Production and Packaging Industry of Medical Devices and Transplanting Devices 10. Food & Beverage Industry 1. Microelectronics Industrial Microelectronics Industry is currently the highest in the clean room. The development of large-scale and large-scale integrated circuits (LSI, VLSI) is increasingly high. In the integrated circuit manufacturing process, the larger the integration, the finer the graphic size (represented by the line width), the smaller the size of the cleansing chamber control particle size (

(1) Confirmation and verification of pharmaceutical production companies 1. A series of activities for drug production enterprises: It is a series of activities that certify plant, facilities and equipment correctly and achieve expected results. 2. Verification of pharmaceutical production: It is a series of activities that prove any operating procedures (methods), production processes or systems. (2) Confirmation of the clean room of the drug factory can be divided into: 1. Design confirmation: design confirmation is to prove that the design of plant, facilities and equipment meets the requirements of the predetermined use and \"drug production quality management specification \". 2. Installation and confirmation: Installation of the master is to prove the construction and installation of plant, facilities and equipment, meet the design standards to meet the requirements of the production process. 3. Run confirmation: Run confirmation is to prove the stability, reliable operation of the plant, facilities and equipment and meet the design standard. 4, performance confirmation: Performance confirmation is to prove that the plant, facilities and equipment can continue under normal operation methods and normal process conditions

The wind speed is high, the resistance is high. If the service life of the filter is based on the final resistance and the wind speed is high, the service life of the filter is short. It is difficult for general users to actually observe the influence of wind speed on filtration efficiency, but it is much easier to observe the influence of wind speed on resistance.