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About us

About us

        KL-AIR Group specializes in the gas purification industry for decades. We operate various types of air dryers, air filters, nitrogen generators, oxygen generators, industrial water chillers, blowers and many other products which number of entity company throughout the country.

       Hangzhou Kelin Aier Qiyuan Equipment Co., Ltd. is a wholly-owned subsidiary of KL-AIR Group. It was developed in cooperation with many domestic and foreign scientific research institutions in 2013, and officially launched market in 2019.

       KL-AIR Group cooperates with many large-scale famous membrane production enterprises in the world, and develops with domestic well-known universities and colleges, then has established a comprehensive production inspection and testing laboratory. Applied in more than 30 countries in the world.

       Hangzhou Kelin Aier Qiyuan Equipment Co., Ltd. is the sales company of KL-AIR Group. Currently, it is responsible for the comprehensive promotion of the market development and application of membrane separation products, and is focused on the use of membrane technology to save energy and reduce emissions, and provides a good solution for technological transformation and upgrading, make this high-tech better use and promotion.

Why KL-AIR ?

Why KL-AIR ?

On-Demand Customization

KL-AIR is unrivalled in its ability to provide site-tailored solutionregardless of size, quantity or specification requirements. In addition to its wide range of standard products, AIRRANE is always

willing to offer customized systems at competitive rates to meet clients’ varied needs in a timely fashion.


Proven Technology & Innovation
KL-AIR’s solid track record of over 15 years has been built through sustained partnerships with our loyal clients. Endless tests and improvements, combined with continued investment in R&D, have equipped KL-AIR with a strong portfolio of patent-protected products and solutions.

Expert Team - Comprehensive Service

KL-AIR’s passionate team of R&D experts (including 4 Ph.Ds) respond to the client’s requirements with the very best of their experience and expertise. From the design and manufacturing of fully-tailored solutions to operational training and consulting services, KL-AIR serves as your one-stop provider for all your gas separation requirements.


Local Strength

KL-AIR has successfully established its presence in the Asia-Pacific region. KL-AIR’s unrivalled understanding and experience of the local market adds to its competitive offering of cost-effective and well-integrated solutions. KL-AIR has exported its products and systems to more than 20 countries, including China,Japan, Australia as well as Turkey, U.K. and the USA.


Quality Assurance

As a result of continued dedication to technological innovation and quality control,KL-AIR’s membrane products have acquired performance and quality certifications from leading authorities in Korea and beyond:


● ISO9001/ISO14001 Certificate

● Separation performance of polymer membrane (KOPTRI)

● Separation performance of hollow fiber membrane (KTL)

● Mechanical properties of hollow fiber membrane (KRICT)


In addition, KL-AIR provides year-round technical assistance for all its products and solutions on top of routine inspections and maintenance visits.