The confined space in vehicles can easily accumulate harmful substances like exhaust PM2.5, formaldehyde, and odors. Traditional flat filters often result in low purification efficiency due to limited surface area. Cleantop has specifically developed the Cylindrical HEPA Filter for automotive environments. With a unique 360-degree cylindrical pleating process, it maximizes the filter material's surface area within an extremely limited volume, significantly enhancing the CADR (Clean Air Delivery Rate) and filter lifespan of car air purifiers, providing vehicle owners with a continuous supply of fresh air.
Get Custom Solutions and Quotes for Car Air PurifiersCompared to traditional single-sided flat filters, the cylindrical structure achieves 360-degree air inflow with no dead angles around the unit. It can circulate in-car air more rapidly, significantly multiplying the CADR (Clean Air Delivery Rate) for particulate matter and formaldehyde, achieving efficient purification.
By closely folding the filter material into a cylindrical shape, the maximum possible filter surface area is loaded into the limited cavity of the car air purifier. This directly results in a high dust holding capacity, effectively extending the filter's clogging cycle and reducing the frequency and cost of material replacement for vehicle owners.
Supports the use of PP, PP+PET composite materials or PTFE for manufacturing. These materials not only efficiently capture PM2.5 particles, pollen, and allergens from vehicle exhaust, but also combine with an activated carbon layer to deeply adsorb formaldehyde, TVOC, and other odors released from interior materials, creating a medical-grade environment inside the car.
| Product Name | Cylindrical HEPA Filter for Car Air Purifier |
|---|---|
| Structural Features | 360-degree circular air inflow design, high-density pleating, maximized effective area |
| Optional Core Filter Material | PP Meltblown Layer / PP+PET Composite Material / PTFE High-Efficiency Material |
| Filtration Efficiency (Efficiency) | Can customize filter materials to various HEPA filtration levels (H11 - H13) based on end-user purification needs |
| Composite Upgrades | Can customize additional pre-filter dust mesh or built-in columnar/modifying activated carbon layer (focused on formaldehyde/odor removal) |
| Core Application Scenarios | All kinds of front/back-installed car air purifiers, desktop micro purifiers, humidifying purification integrated devices |
| Specifications and Dimensions | Completely customized as per client requirements (supports various outer diameters, inner diameters, heights, and base sealing flange designs) |
| Quality Certification System | Production relies on a 20,000㎡ clean workshop, certified by IATF16949 automotive industry quality management system and ISO9001/14001. Ensures automotive-grade quality for every batch of OEM products. |
Cleantop has over 20 years of R&D and manufacturing experience in filtration products and a nationally recognized CNAS testing center. Whether developing customized cylindrical filters for new car air purifiers or large-scale mature product OEM production, our professional engineering team can provide you with the most reliable technical and production capacity support.
Contact Engineering Team / Request Product SamplesOur standard cylindrical HEPA filter can achieve H11-H13 level (with a filtration efficiency ≥95%-99.95% for 0.3μm particles) and can be customized to H14 level as per customer requirements. This filter adopts a 360° air intake structure, which has low wind resistance and large dust holding capacity, widely applicable to car air purifiers, cup purifiers, console purifiers, etc., effectively filtering pollutants such as PM2.5, pollen, dust, and bacteria. We can also provide composite functionality (such as adding an activated carbon layer for formaldehyde and odor removal) upon request.
In normal automotive environments, we recommend a replacement cycle of 6-12 months for our cylindrical HEPA filter. The actual lifespan depends on vehicle usage conditions, air pollution levels, and daily usage duration. The filter uses imported high-quality glass fiber or PP meltblown filter materials, with dust holding capacity improved by over 20% compared to conventional filters. We have a nationally recognized CNAS testing center that can provide authoritative lifespan testing reports and performance degradation curves to help traders and brand owners establish more reasonable replacement suggestions.
Cleantop has passed ISO 9001, ISO 14001, ISO 45001 management system certifications and will obtain IATF 16949 automotive industry quality management system certification in 2024, completely meeting the stringent requirements of the automotive parts supply chain. At the same time, we have several international certifications such as European BSC1, US EPA, NSF, and our filter materials comply with RoHS and REACH environmental standards. Our products have been stably supplied to multiple markets including Europe, the United States, Japan, and Korea, meeting compliance requirements for brand owners in various regions.
Yes. Cleantop has over 20 years of experience in filtration product R&D and manufacturing and has accumulated over 1000 filtration solutions. We can customize the external diameter, internal diameter, height, end cap materials (plastic/metal), filter material types (HEPA single-layer/HEPA+activated carbon composite), activated carbon weight, filtration grades, and all parameters according to customer needs for car air purifiers. Additionally, we offer packaging customization (color boxes, blister packs, brand logo printing) and independent mold opening services, helping customers create differentiated products.
Cleantop's factory covers an area of 50,000㎡, with 20,000㎡ of clean workshop space, comprising 6 cleanrooms that can reach a cleanliness level of 100,000, ensuring that filters are free from secondary contamination throughout the production, assembly, and packaging processes. We have a nationally recognized CNAS testing center equipped with professional equipment, including aerosol generators, laser particle counters, wind resistance testing platforms, etc., to conduct comprehensive testing on filtration efficiency, wind resistance, dust holding capacity, and leakage rates for each batch of products. Combined with processes such as PPAP, APQP, SPC under the IATF 16949 system, batch consistency is fully guaranteed.
The MOQ for standard cylindrical HEPA filters is typically 1000pcs. The MOQ for customized versions is negotiable depending on mold complexity. Regarding sample production, existing specifications can be shipped within 3-5 working days; custom molded samples typically take 15-25 working days to complete. The delivery time for bulk orders is generally 25-35 days; during peak seasons, we advise customers to prepare stock in advance. We have a mature supply chain and a self-owned mold workshop that can flexibly schedule production based on customer order volume to ensure timely delivery.
The cylindrical HEPA filter is sensitive to deformation and humidity. We use independent PE bag sealing + pearl cotton/honeycomb lining + reinforced five-layer corrugated cardboard boxes as standard packaging solutions, and can place desiccants inside the boxes to address long shipping cycles in humid environments. Each box is printed with fragile and moisture-proof indicators, and we can customize dust covers, vacuum packaging, or colorful retail packaging based on customer needs. Our 20+ years of export experience ensure that our products maintain their performance when exported to Europe, the United States, Japan, and other regions.
As a manufacturer focused on air and water filtration for over 20 years, Cleantop provides comprehensive support to B2B customers: 1) Technical support: Provides CNAS testing reports, third-party certification assistance, filter selection advice, and structural optimization plans; 2) Market support: Provides high-definition product images, 3D renderings, performance testing videos, English specifications, and other marketing materials; 3) Supply chain support: Provides VMI stocking and staggered delivery services based on customer sales rhythm; 4) After-sales support: Provides warranty commitments and batch traceability mechanisms. We are committed to becoming a long-term and stable strategic partner for our customers.
