China's air clean technology began in the mid-1950s and has gone through four or four stages of development: air clean technology 1) from the mid-1950s to the mid-1960s, mainly based on the technology of the former Soviet Union, serving the national defense , aerospace, atomic energy industry and scientific research. Compared with modern clean technology, it is relatively primitive and rough in terms of plant, equipment, airflow organization, etc., and it is in its infancy. 2) From the mid-1960s to the late 1970s, due to various reasons at home and abroad, it mainly relied on self-reliance and development. At that time, it was based on the standards and technologies of the United States and Japan.
China's air clean technology began in the mid-1950s and has experienced roughly four or four stages of development:
(1) From the mid-1950s to the mid-1960s, it mainly used the technology of the former Soviet Union to serve the national defense, aerospace, atomic energy industries and scientific research. Compared with modern clean technology, it is relatively primitive and rough in terms of plant, equipment, airflow organization, etc., and it is in its infancy.
(2) From the mid-1960s to the late 1970s, due to various reasons at home and abroad, it mainly relied on self-reliance and development. At that time, with reference to the standards and technologies of the United States and Japan, the company developed into a high-efficiency filter and a nano-flame test bench, a clean bench, a particle counter, a fabricated clean room, and other clean room accessories (air shower, transfer window, and others). Pressure valve, etc., compiled "air clean technical measures", laid the foundation of China's clean technology
(3) From the end of the 1970s to the end of the 1980s, due to the implementation of the national policy of reform and opening up, the technology and equipment of developed countries began to enter the Chinese market, and modern clean technology in China's large-scale integrated circuits, optical fibers, color picture tubes, Industrial cleansing fields such as liquid crystal displays have been rapidly developed, and 10-level clean cells and non-separator filters equipped with 0.1um high-efficiency filters have been successfully developed. At the same time, it has also been applied in the biological clean room of the medical, pharmaceutical, biological, cosmetic and food industries. Some pharmaceutical factories have begun to adopt biological clean technology in the transformation of the original air conditioning system, and the simple level of "one-way flow" clean room and assembly type The bacteria ward was used in hospitals, and the biosafety workbench and bacteria sampler were successfully developed. In 1982, China's pharmaceutical industry GMP was announced. In 1983, the China Electronics Society Clean Technology Branch was established. In 1985, GBJ73-1984 "Clean Factory Design Code" was promulgated, and China's clean technology entered a steady development stage.
(4) Since the end of the 1980s, the company has introduced overseas funds, technology and equipment in the field of large-scale integrated circuits, and formed a group of well-known international brand enterprises. The scale of clean rooms is increasing, and the fan filter unit (FFU) and Microenvironment technology has been applied and promoted. In the medical and pharmaceutical fields, clean technologies are becoming more mature and regulated, and biosafety technologies are developing rapidly. Clean technology related equipment such as micro-environment, dense-pleated non-separator high-efficiency filter, and microcomputer-controlled filter performance test bench can basically be made in China, and the development of 0.1um lithography machine and related environment has also begun.
China's air clean technology has experienced more than 50 years of development, and has formed a fairly complete technical system and a broad application market, but it must be seen that due to various reasons, in the high-end fields and markets of clean technology, there are still gaps and lack of discourse in China. Right, we also need the constant efforts of science and technology and engineering and technical personnel.
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