China's clean technology started in the early 1960s. In 1964, a sodium flame test bench for high efficiency filters was built. In 1965, the Air Conditioning Research Institute of the Chinese Academy of Building Research developed GS series high efficiency air filters with blue asbestos fiber filter paper (for later use) and GB series high efficiency air filters with ultra-fine glass fiber filter paper. In 1973, China’s first dust particle counter model J-73 (measuring range 0.3~10μm) and monodisperse polystyrene latex standard particles (PSL) for calibration of particle counters were successfully developed. ED-STD-209A standard 100,000 to 100 clean workshop design and construction.

In 1979, the Air Conditioning Institute of CABR organized the compilation and publication of "Technical Measures for Air Cleaning", which was China's first normative document on clean technology.

In recent years, most areas of our country have been more and more severely affected by smog. The concept of home purification has begun to spread. Cleanliness has gradually penetrated into everyone’s thoughts and lives. Related new technologies and products continue to emerge, which will become a new industry in the clean industry Opportunities and development points.

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