Established in 1995, Joylong has been engaged in clean technology and environmental protection industry for more than 22 years. With 6 Subsidiaries , 7 factories, 30+project departments and 1500+ staff throughout China, Joylong group provides systematical R&D, production and services for the society in the following areas: filtration and purification, cleaning, surface treatment, polymeric coating, water treatment, waste utilization, solid waste management, contamination analysis and monitoring, clean room maintenance, etc.Joylong Group is: Vice president unit of CRAA ( Clean room Technology Committee of China Refrigeration and air Conditioning Industry Association) Vice president unit of CRRA( China National Resources Recycling Association) Vice president unit of China Contamination Control Society Chief editor unit of National Standard equal to ISO14644-5 ( International Standardization Organization, clean rooms and associated controlled environments-Part 5: Operation ) Chief editor unit of National Standard equal to ISO14644-9 surface cleanliness Editor unit of National Air Filter Standard (CRAA 430433-2008)