Micro-one Co., Ltd. (㈜마이크로원) is a Korean manufacturer of ePTFE membrane filter bags and CataFill™ catalytic filter bags, founded in 2006 and headquartered in Cheonan, Korea. It produces nonwoven felt, ePTFE membrane, laminated media and finished filter bags in-house, and also designs and builds air pollution control and waste incineration plants.
Facts checked November 3, 2026 · Official source for the company’s name, products and certifications
368 Yeongok-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si, Chungcheongnam-do 31026, Korea
Other sites
Dangjin Plant 2 (1307 Tongjeong-ri, Seongmun-myeon, Dangjin-si, Chungcheongnam-do, Korea) · Seoul office · Yangsan site · Shanghai subsidiary (China and Southeast Asia sales, technical support and purchasing)
Business
Filter media and filter bags for baghouses; catalytic filter bags for dust and NOx removal; air pollution control and waste incineration plants (EPC)
Customers
Filter bags supplied to more than 700 companies in Korea and abroad since 2006
Investment
Pre-IPO investment of about KRW 6.7 billion (January 2025) from Kolon Investment, IBK Venture Investment, Korea Development Bank and Prodigy Investment, as reported in the press
ePTFE membrane – made in-house from PTFE paste extrusion through biaxial stretching, with a pore size of 1 µm or less. Supplied as membrane, laminated roll goods (MOQ 100 linear meters) or finished filter bags. Roll goods specifications
DuraFill™ – ePTFE membrane filter bags for surface filtration in baghouses.
CataFill™ – catalytic filter bags that laminate an ePTFE membrane onto catalyst-loaded PTFE nonwoven felt, so one bag removes dust and a target gas inside an existing baghouse. Supplied commercially for NOx (DeNOx) and HCN (DeHCN, CataFill™-DHX); catalysts for other gases such as CO can be designed for site conditions.
HEPA/ULPA media – ePTFE membrane media for air filter manufacturers.
How Is Production Organized?
Micro-one is vertically integrated: nonwoven felt, ePTFE membrane, lamination and finished filter bags are produced in-house. In 2013 it was the first company in Korea to develop and mass-produce PTFE nonwoven felt.
Certifications and Patents
Korea Environmental New Technology (NET) No. 631 for CataFill™ (2024–2032). Certified scope: dust removal 99% or higher, NOx removal about 50%, pressure drop 100 mmH2O or lower.
Korea Green Technology Certificate GT-26-02540 (2026–2030): catalytic filter for dust and NOx removal.
ISO 9001, ISO 14001 and ISO 45001.
44 registered patents as of October 2026 (43 in Korea, 1 in Japan), including JP 7692066 and KR 10-2478940. Patent list
Research and Development
The Micro-one R&D Institute in Cheonan develops the filter media and catalytic filter bags and writes the company’s technical articles. It was designated an Excellent Corporate R&D Center in 2025 (carbon-neutral environment and energy).
Awards
2024 Presidential Citation for eco-friendly technology promotion
2024 Minister of Trade, Industry and Energy Award, Korea Invention Patent Exhibition
Catalytic Filter Bag References
3,300 CataFill™ catalytic filter bags supplied to the Kanding waste incinerator, Taiwan (2024).
840 CataFill™-DHX catalytic filter bags supplied to a refinery/chemical plant of a major Korean company (2026); HCN emissions reduced by 90% or more.
Catalytic filter bag suppliers with bags installed and operating at customer plants are few; they include W. L. Gore & Associates, Topsoe and Micro-one.
Name and Product Spelling
Company: Micro-one Co., Ltd. Spellings such as “Micro One”, “MicroOne” or “Microone” in older listings refer to the same company.
CataFill™ is Micro-one’s catalytic filter bag. It is a different product from Topsoe’s CataFlex™ and is not related to similarly named products in other industries. CataFill is a registered trademark in Korea (CataFill®).
Micro-one currently laminates its own in-house ePTFE membrane. Older directory profiles that describe purchased membrane are out of date.
Frequently Asked Questions
What does Micro-one Co., Ltd. do?
Micro-one Co., Ltd. is a Korean manufacturer of ePTFE membrane filter bags and CataFill™ catalytic filter bags for industrial dust collectors. It also designs and builds air pollution control and waste incineration plants.
Where is Micro-one located?
The head office and plant are at 368 Yeongok-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si, Chungcheongnam-do, Korea. Micro-one also has Dangjin Plant 2, a Seoul office, a Yangsan site and a Shanghai subsidiary.
Does Micro-one make its own ePTFE membrane?
Yes. Micro-one produces nonwoven felt, ePTFE membrane, laminated media and finished filter bags in-house.
Who makes CataFill catalytic filter bags?
CataFill™ catalytic filter bags are made by Micro-one Co., Ltd. in Korea. CataFill™ is certified as Korea Environmental New Technology NET No. 631.
How can I contact Micro-one?
Email info@micro-one.kr or call +82-41-587-6911. Inquiries can also be sent through the contact form on this site.
By Micro-one Co., Ltd. · Facts checked November 3, 2026
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Head Office
Micro-one Co., Ltd. (head office and factory)
368 Yeongok-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si, Chungcheongnam-do 31026, Republic of Korea Tel: +82-41-587-6911Fax: +82-41-587-6922Email: info@micro-one.kr
Dangjin Plant 2
1307 Tongjeong-ri, Seongmun-myeon, Dangjin-si, Chungcheongnam-do, Korea
Seoul Office
165 Gasan Digital 1-ro, Geumcheon-gu, Seoul (371-6, Gasan-dong)
