Aiming to address the structural pain points of desktop air purifiers and in-vehicle devices where the available space is extremely limited and cannot accommodate bulky multi-layer separation filters, Cleantop has specially developed the HEPA+ Granular Activated Carbon Composite Filter. The product cleverly combines a high-precision HEPA folded filtration layer with a high-iodine value granular activated carbon module through heat fusion. One filter effectively intercepts PM2.5 particulates while deeply adsorbing harmful gaseous pollutants such as formaldehyde and TVOCs. This not only provides you with optimal space utilization of the device but also significantly enhances the CADR (Clean Air Delivery Rate) core metric of the entire unit.
Get customized purification filter solutions and quotesDesktop purifiers and smart small appliances have compact internal structures. We adopt advanced heat-melt adhesion and high-frequency sealing technology to perfectly integrate the dust filtration material with the odor-removing carbon layer. A single filter can achieve multiple purification capabilities, greatly reducing product thickness and providing designers with more creative freedom in appearance.
Compared to ordinary low-efficiency sponge carbon, we use a porous honeycomb structure to directionally fill high-quality, high-iodine value granular activated carbon/modification formaldehyde-removing carbon. Its specific surface area expands geometrically, actively capturing and deeply decomposing free formaldehyde, benzene compounds, and odor molecules in the air, without becoming acidic or releasing secondary pollutants over long-term use.
Different brands have varying demands for the appearance of filter elements. Supported by Cleantop’s proprietary mold development and automated production lines, we accommodate customization of conventional flat, fan-shaped structures, round, and irregular polygon composite filters. Filter material layers can be selected from PP, PP+PET, PTFE, etc., precisely matching the stringent energy efficiency testing requirements of end products.
| Product Name | HEPA + Granular Activated Carbon Composite Filter (HEPA & Granular Activated Carbon Filter) |
|---|---|
| Core Dust Filtration Material (Media) | High-precision PP Polypropylene / Moisture-proof PP+PET Composite Material / PTFE High-Efficiency Microporous Membrane |
| Core Gaseous Filtration Material | High Iodine Value Coconut Shell Granular Activated Carbon / Catalyst Modified Formaldehyde-specific Activated Carbon |
| Particulate Filtration Efficiency (Efficiency) | HEPA filtration grades can be selected from F7 to H13, specifically customized according to the device's airflow and purification needs |
| Common Product Forms | Conventional rectangular flat types, cylindrical types, fan-shaped and irregular polygons customized for small appliances, etc. |
| Main Compatible Products | Desktop/Bedside Mini Air Purifiers, Car Air Purifiers, Fresh Air Exchange System Modules, Humidifying Purification Integrated Machines |
| Specification Size Customization Service | 100% Supports OEM/ODM Flexible Molding Customization. Custom sizes (length, width, thickness) and sponge sealing edge treatments will be manufactured according to customer device duct and structure specifications. |
| Enterprise Quality Certification System | Fully complies with ISO9001, ISO14001, and IATF16949 international automotive industry quality management certifications, with strict control of factory quality by a national-level CNAS testing laboratory. |
Whether you are looking for a cost-effective source for standardized consumables manufacturing, or custom fan-shaped or irregular formaldehyde filters for your latest model of mini desktop purifiers, Cleantop, with over twenty years of experience and thousands of filtration solutions, will be your most reliable supply chain support.
Contact Engineering Team / Apply for Product Sample and Customization SolutionOur cylindrical HEPA filters can achieve grades H11-H14, with a filtration efficiency of up to 99.995% for 0.3μm particles, and can be customized to different levels based on customer requirements. The product is widely used in desktop air purifiers, vehicle purifiers, and small fresh air devices, effectively filtering PM2.5, pollen, dust, bacteria, and other particulate matter. If compound functionality is needed, we can also integrate an activated carbon layer in the filter to simultaneously remove formaldehyde, TVOCs, and odors.
Full support is provided. Cleantop has over 20 years of experience in the development and manufacturing of filtration products, accumulating over a thousand filtration solutions. We can customize filter sizes (diameter, height), filtration grades (H11-H14), material combinations (HEPA + activated carbon composite), fold density, end cap materials, colors, and logo printing. We also support neutral packaging, brand packaging, and custom color boxes, fully meeting the differentiated needs of brand merchants and OEM customers.
Cleantop has passed the ISO 9001, ISO 14001, and ISO 45001 certification systems, and our products have received several international certifications including BSC1 (Europe), EPA (USA), NSF, SOP, etc. In 2024, we further obtained IATF16949 (automotive industry) and GMP certification for medical supplies. Products are stably exported to markets in Europe, the United States, Japan, Korea, and fully comply with the access compliance requirements of mainstream markets.
Cleantop has a factory of 50,000 square meters, which includes 20,000 square meters of six clean workshops to completely eliminate production environment pollution from the source. The company has a nationally recognized CNAS testing center that can conduct full testing for each batch of filters on filtration efficiency, resistance, dust holding capacity, structural strength, etc. We implement full-process quality control from raw material entry, production processes, to finished products, and maintain complete testing reports to ensure stable and consistent performance of each batch of products.
Under normal usage conditions (8 hours a day), our HEPA filter typically lasts 6-12 months, depending on environmental air quality, usage frequency, and pollutant concentration. We can integrate RFID tags into the filter or offer timing/differential pressure sensor solutions to help end users accurately determine when to replace the filter. Customers can also specify specific dust holding capacity standards for us to conduct targeted R&D design.
The MOQ for standard models is usually 1,000-2,000 pieces, while the MOQ for custom models is negotiated based on specific solutions. We also support flexible minimum orders during the trial stage. The sampling cycle is generally 7-15 working days (depending on customization complexity), and the mass production delivery time is usually 25-35 days. For long-term cooperation customers, we can arrange for inventory and VMI management to further shorten delivery cycles.
As a professional manufacturer with over 20 years of industry experience, we have a dedicated R&D team and CNAS laboratory, enabling us to provide customers with one-stop technical support from project consulting, filter material selection, structure design, sample development to performance testing. Customers only need to provide the dimensions of the purifier chamber, target CADR or filtration requirements, and we can output the optimal filter design scheme and complete test data report, assisting customers in rapidly bringing products to market.
For standard model stock samples, we usually offer free samples, and customers only need to cover international shipping costs. For customized development samples, a certain sampling fee will be charged based on mold and material costs, which can be deducted or refunded in subsequent mass orders. We welcome customers to send competitive products or provide specifications for our technical team to conduct benchmarking development, ensuring that the samples meet your performance expectations.
