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Usage filters by facility

Factories and manufacturing facilities
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This filter is used in semiconductor manufacturing facilities, including semiconductor component plants, semiconductor-based electronic appliance factories, and other production environments related to semiconductor fabrication. It is designed for cleanroom areas classified within Class 1 to Class 1000, ensuring strict contamination control and high-level air cleanliness required in advanced semiconductor processes.

This filter is installed in air-conditioning and ventilation systems within food processing facilities and factories, as well as in other production environments requiring protection from pollen, insects, and airborne contaminants entering through windows or air inlets. It is suitable for cleanroom areas ranging from Class 100 to Class 100,000, ensuring sanitary air quality and contamination control in food manufacturing processes.

This is a core industrial filter widely used in chemical refining facilities and secondary industries utilizing chemical substances, including comprehensive installations and related equipment. It is specifically designed for sites where chemical processes could cause secondary environmental contamination, ensuring safety and pollution control in surrounding areas.

This filter is designed for the protection of electrical and electronic equipment, including semiconductor chips, repeaters, and transmitters/receivers. It functions to prevent sparks and overheating caused by dust contamination while supporting cooling operations within electrical systems. Additionally, it provides corrosion resistance and protection against salt damage, making it suitable for environments exposed to humidity or coastal conditions.

This filter is used in shipbuilding facilities, marine equipment manufacturing plants, and critical coastal installations, including large-scale logistics or transportation facilities located near the shoreline. In coastal environments, exposure to salt-laden air (SOLT) can cause corrosion and malfunction of high-value machinery and equipment. Therefore, this filter is designed as a special-purpose corrosion-resistant filter to provide effective protection against salt damage and extend the operational lifespan of marine and coastal systems

In power generation and transmission facilities, dust accumulation can cause malfunctions in batteries, blowers, and ventilation systems. This filter is specifically designed for such environments, providing high airflow capacity and equipment protection. It ensures stable performance of power transmission systems by preventing dust-related failures and enhancing overall operational reliability.

This filter is used in welding process facilities such as shipyards, automotive plants, and welding workshops, as well as in furniture manufacturing and painting/coating factories where dust, fumes, and odors are generated simultaneously. It is installed on mechanical equipment or ventilation systems to remove odors and airborne contaminants, serving as an effective deodorization and air purification filter in industrial environments.

In film manufacturing facilities, even ultra-fine dust particles can cause defects in the production process. Therefore, filters equivalent to those used in semiconductor manufacturing cleanrooms are applied. These filters are suitable for Class 1 to Class 1000 cleanroom environments, ensuring high-level air cleanliness and contamination control during precision film production.

In manufacturing-based facilities, air filters are essential for maintaining indoor ventilation and humidity balance, improving air cleanliness to reduce product defect rates, and minimizing harmful gases generated during exhaust processes that cause environmental pollution. These filters, generally divided into two stages — pre-filters and medium/final filters — are collectively referred to as air filters (AIR FILTER). Depending on their application, air filters are classified into various types such as industrial air filters for HVAC systems, high-efficiency air filters for reducing impurities, and intake or exhaust filters for minimizing pollutant emissions. Selection should be made according to the specific usage conditions and system requirements. Typical industries that utilize these air filtration systems include semiconductor manufacturing plants, food processing factories, chemical and gas treatment facilities, electrical and electronic manufacturing plants, shipbuilding and marine equipment factories, pharmaceutical facilities, aerospace and railway infrastructure, heavy equipment facilities, and film production plants. Since the purpose and environmental conditions vary across these fields, it is essential to select filters that are precisely suited to each equipment specification and on-site condition.
Hospitals & Pharmaceuticals
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In general hospitals, most areas operate as semi-cleanroom environments, and the filters used are primarily focused on heating, cooling, and odor removal. Depending on the facility’s requirements, some sections operate forced air supply and exhaust systems to maintain positive pressure, utilizing standard-grade filters for general air handling and comfort control.

In specialized hospital wards operated for critical medical purposes, cleanroom systems are maintained according to the required level of environmental control. Filter selection is made based on the specific needs of the patients and equipment within these wards, and most filters are designed to operate at heating, cooling, and general air-conditioning levels to maintain stable and hygienic indoor conditions.

Medical-related facilities refer to nursing homes, hospice wards, and convalescent or rehabilitation hospitals that serve as extensions or support units to specialized medical centers. Compared to specialized hospital wards, these facilities generally emphasize heating, cooling, and comfort air management rather than strict cleanroom conditions. Filters used in such environments must comply with public multi-use facility guidelines and are specifically designed for the control of fine dust particles (PM2.5) to ensure safe and clean indoor air quality.

Pharmaceutical manufacturing plants operate under strict in-house standards and are regulated by the Ministry of Food and Drug Safety (MFDS). Accordingly, filters used in these facilities must comply with pharmaceutical cleanroom management requirements. Except for special cases, most areas maintain a cleanliness level between Class 100 and Class 10,000, and filter operation is managed according to the specific cleanroom classification standards.

An isolation room is designed for the treatment of patients carrying highly contagious or life-threatening viruses, such as influenza or other infectious diseases that spread rapidly among the public. Unlike conventional cleanrooms that maintain positive pressure to block external air, isolation rooms operate under a negative-pressure system to ensure that airborne viruses do not escape from the interior. Filtered ventilation and controlled airflow allow clean air to enter while preventing contaminated air from being released outside.

Laboratories operate in various ways depending on their type and purpose, but generally maintain partial clean zones such as clean benches or clean booths to ensure focused efficiency and consistent research outcomes. In most laboratory environments, harmful gases and chemical fumes are generated during operation, so exhaust and deodorization systems are typically installed. Accordingly, the filter configuration varies based on the type of exhaust system and the level of contamination control required.

In hospital facilities, special filtration standards are applied to ensure the protection of medical equipment and to increase the containment efficiency against hospital-borne bacteria and infectious agents. The filter specifications vary depending on each facility’s environmental conditions and operational purpose. In such cleanroom-type environments, the air filtration system must not only maintain particle control but also prevent the release of harmful viruses from inside to outside by maintaining isolation or negative-pressure zones. For medical treatment and patient care areas, it is critical to maintain Class Zone air cleanliness levels according to ventilation capacity standards, suppressing the inflow of viruses, bacteria, and fine dust from external sources. Due to the limited natural ventilation inside hospital buildings, safety and hygiene-focused filtration management is vital to ensure clean air for both patients and medical personnel. Therefore, filter selection should be made based on the design layout, airflow characteristics, and required Class Zone standard, in order to sustain the proper ventilation performance suited to each hospital environment.
Building & Multi-use facility
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Buildings serve as multi-use facilities designed for occupant comfort and convenience, with significant electricity consumption due to intensive air-conditioning in summer and heating in winter. To achieve energy efficiency, filters must be selected in accordance with air quality and environmental management guidelines. Rather than relying solely on design specifications provided by HVAC consultants, a more practical approach is to prioritize realistic filter design and selection during the planning stage, which is essential for efficient and sustainable building air system design.

Multi-use facilities are designed for the comfort and safety of large numbers of occupants, with operational priorities focused on air-conditioning efficiency and prevention of airborne virus transmission. To meet environmental air quality guidelines, it is essential to select appropriate filters and design systems that address the risks of virus and respiratory disease spread among unspecified users. A practical approach to filter design and procurement should be prioritized to ensure an effective and hygienic building HVAC system.

For odor and deodorization applications, filters are primarily used in duct systems and ventilation units to block unpleasant odors—such as food smells or cigarette smoke—that may infiltrate from lower building levels into occupied spaces. These systems are designed to protect building occupants by reducing odor-related discomfort and improving indoor air quality. Filter selection is based on an airflow velocity below 1.2 m/s, taking into account equipment type, airflow volume, and duct design. Typically, primary deodorization equipment is installed to remove major odors, while secondary deodorizing filters are applied to eliminate any residual smells.

In many schools, aging buildings and outdated HVAC equipment reduce the effectiveness of existing filtration systems. Therefore, it is necessary to upgrade or retrofit air filtration systems to meet environmental standards applicable to multi-use public facilities. Most schools operate primarily with heating and cooling systems, but also include laboratories and cleanrooms for specific educational or research purposes. As such, professional filter maintenance and management have become increasingly important to ensure proper air quality and system performance.

Department stores and marts operate on systems that prioritize visitor comfort, safety, and temperature control, where precise heating and cooling management directly impacts business performance. Since these facilities are major electricity consumption targets under regional energy management plans, it is essential to prevent excessive energy loss caused by filter inefficiency. By establishing proper cleanliness levels and selecting filters that balance air quality and energy efficiency, the HVAC system can maintain optimal operation without overloading power usage.

Cultural facilities, which serve both public and private functions, include theaters, exhibition halls, and museums—each requiring distinct HVAC designs according to their operational characteristics. Most systems combine building-type and commercial air-conditioning methods, so filter selection must align with each facility’s structural and operational standards. For museums, filters must prevent corrosion caused by gases emitted from stored artifacts and inhibit the accumulation of carbon-based particles over time to preserve cultural assets. For cinemas, filters should be designed to prevent toxic gas emissions in case of fire and to ensure optimal temperature and air-quality control for occupant comfort. Other cultural facilities should be engineered for flexibility, allowing their air systems and filter design to adapt to the specific needs of the users and environment.

In residential homes, filter use tends to be standardized, typically involving air purifier filters, heat exchange filters, or water purification filters. Accordingly, proper equipment compatibility and filter design should be prioritized. For most households, it is recommended to use filters that match existing equipment models, which can also be upgraded or customized upon prior consultation. Recently, there has been a growing demand for window-mounted filtration systems that provide ventilation and oxygen supply. While not part of standard product lines, such systems are being custom-designed and supported separately to meet user needs.

In buildings and multi-use facilities, HVAC systems are designed primarily for energy efficiency and comfort, taking into account the impact of external and internal environmental factors, unlike the cleanliness-oriented systems used in industrial facilities. Because buildings accommodate a large number of occupants, dust inflow and re-entrainment of fine particles occur more easily, both from external air and internal circulation. In the case of multi-use facilities, where the density and movement of people are higher, the inflow of contaminants and pollutants is more frequent, making it difficult to maintain a consistent level of air cleanliness using conventional filtration systems alone. Therefore, for such environments, a more practical approach involves HVAC operation optimized for energy saving, exhaust system design, air cleanliness maintenance, and adherence to air-quality guidelines suited to the specific atmospheric conditions of each facility.
Deodorization and special filter
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Salt damage refers to corrosion and deterioration caused by sea breeze carrying salt particles (chlorides) from evaporated seawater in coastal regions. This phenomenon accelerates the corrosion of equipment, metal structures, and concrete buildings, thereby reducing their service life and increasing maintenance costs. To mitigate these effects, anti-corrosion and salt-removal filters must be integrated into HVAC systems. These filters are designed to reduce salt penetration, protect valuable assets, and maintain long-term indoor air quality and occupant health in coastal or marine-influenced environments.

The number of factories and treatment facilities using volatile organic compounds (VOCs) in their manufacturing processes has been steadily increasing. In such facilities, emission control and worker exposure to harmful gases are critical issues, often requiring substantial time and cost for reprocessing and discharge management. However, many operators misunderstand the importance of proper filtration systems, focusing only on deodorization units while neglecting the filters that play an equally vital role. As a result, problems tend to accumulate over time, making it increasingly difficult to find effective solutions. Therefore, these facilities require accurate problem diagnosis and systematic operational management, with proper filter design and selection being an essential component of effective gas removal and odor control.

In manufacturing-based cleanroom facilities, processes often involve gaseous volatile organic compounds (VOCs) such as odor gases, radon, and alcohol-based compounds. These gases can accumulate within the cleanroom, and although they are partially removed through exhaust and return systems, they frequently cause corrosion of aluminum coils in HEPA filters, leading to contamination or material shedding onto products. To prevent such occurrences, filters without aluminum coils are recommended, as they eliminate the root cause of oxidation and corrosion. Typical problematic gases include hydrofluoric acid (HF), sulfur oxides (SOx), nitrogen oxides (NOx), and various organic vapors such as benzene.

Due to chemical reactions within the cleanroom, gaseous airflow from the return duct can cause unwanted gas-phase circulation inside the room. In such cases, boron compounds may be released from conventional HEPA or ULPA filters, leading to abnormal air contamination and potential deposition on wafers or other sensitive manufacturing components. These boron-based particulates combine with airborne molecules, forming larger particles that adhere to surfaces and increase defect rates. This phenomenon is typically caused by gas-induced degradation of glass media, which accelerates particle emission within cleanrooms. PTFE-based HEPA and ULPA filters exhibit superior resistance to boron release and chemical corrosion. They provide excellent tensile strength and durability, minimizing contamination risks, though they are generally more expensive compared to conventional glass-fiber filters.

This filter is designed for high-temperature applications exceeding 350°C, typically used in industrial furnaces and thermal processing equipment. It is finished with a ceramic sealing treatment, allowing the product to withstand extreme operating temperatures and maintain long-term structural integrity. During manufacturing, minor surface cracks may appear as moisture evaporates, but these do not affect performance. However, due to the brittle nature of ceramic materials, care should be taken to avoid mechanical impact or vertical pressure damage.

설명입니다.

The term “DE-MISTER” combines “DE” (to remove) and “MISTER” (fine mist particles), referring to a filter that captures and removes moisture and oil mist suspended in the air, discharging them through a drain hole to another location. It is typically used as an oil mist removal filter, such as in subway wheel lubrication systems, kitchen hoods, and dehumidifying ventilation systems. Because it operates under constant exposure to moisture and oil, the filter is manufactured using corrosion-resistant and non-rusting materials. It is also made from non-conductive and fire-resistant materials, ensuring durability and stability under electrical or thermal stress.

The key characteristic of special-purpose filters is their ability to perform reliably in the most demanding and mission-critical environments. These filters are typically designed through advanced engineering processes to ensure consistent performance, even in applications where the supply and demand balance is limited and maintenance or replacement is difficult. Since each installation requires specific configuration, auxiliary equipment must be adapted or filters must be selected to precisely match system requirements. Special-purpose filters are used in high-temperature facilities, HF gas or inert gas environments, and steel or chemical processing plants. They are also essential in cleanrooms requiring enhanced product quality, environments where machinery contamination must be prevented, and settings where precision instruments and micro-systems must remain isolated from external exposure. These filters are classified and selected according to their intended function, environmental conditions, and engineering design, playing a vital role as one of the most critical components in the system’s overall performance and reliability.