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The Thesvin cylindrical anti-bacterial and anti-virus filter is a multi-layer HEPA filter element built for 360° radial airflow in premium vehicle air purifiers, compact household and desktop air purifiers, and maternal-infant health appliances. It captures PM2.5, pollen, pet dander, cigarette smoke particles, and dust aerosols while an anti-microbial treatment inhibits influenza A virus, E. coli, and Staphylococcus aureus on the filter media. The 82.4% mite-removal rate (tested to FZ/T01100-2008 by a national authority) and the cylindrical form factor make it a direct fit for appliances that draw air through a central core rather than a flat panel.
The filter is a self-supporting 360° annular cartridge: a high-density pleat pack wrapped around a hollow core, with the outer diameter, inner diameter, and height matched to the host unit's intake chamber. Air enters radially through the full circumference, so the element locates inside the purifier's cylindrical housing and seals along its end faces. Because the seal is made on the end faces rather than on a separate frame, the cut accuracy of the pleat pack directly determines whether the filter seats without bypass.
For Thesvin, fitment is a dimensional discipline. The outer diameter sets the clearance to the housing wall; the inner diameter sets the fit over the motor or impeller hub; the height sets the compression at the end gasket. All three are confirmed against your drawing or a returned old part before tooling is opened. The filter can be supplied with different outer diameters, inner diameters, heights, and filtration-efficiency splits under OEM/ODM tooling, so a new appliance platform does not have to inherit an off-the-shelf size.
Installation is a straight axial push: the cartridge slides over the core and seats when the end faces meet the housing stops. There are no clips, screws, or orientation keys in the filter itself; the host device defines the mounting. This keeps the interface simple and makes field replacement a one-part operation for the end user.
The core HEPA performance targets the fine fraction of indoor and cabin air: PM2.5, pollen, pet dander, cigarette particles, and dust aerosols. The pleated media provides a large surface area in a small envelope, which keeps pressure drop low enough for compact purifiers while maintaining capture efficiency on sub-micron particles.
On top of particulate capture, the filter carries an anti-bacterial and anti-virus function that inhibits influenza A virus, E. coli, and Staphylococcus aureus. This is a media-level treatment intended to reduce microbial load on the filter surface, not a claim of sterilising the room air. For households with allergy concerns, the element also delivers a mite-removal rate of up to 82.4%, tested to FZ/T01100-2008 by a national authority. Together, these functions make the cartridge suitable for bedroom, nursery, and vehicle cabin applications where the filter is close to the occupant.
| Item | Detail |
|---|---|
| Product name | Cylindrical HEPA + anti-bacterial/anti-virus composite filter |
| Filter construction and form | Multi-layer functional composite media; 360° annular high-density pleated intake structure |
| Core HEPA performance | Captures PM2.5, pollen, pet dander, cigarette particles, and dust aerosols |
| Anti-bacterial / anti-virus function | Inhibits influenza A virus, E. coli, and Staphylococcus aureus |
| Mite-removal performance (test standard) | Up to 82.4% mite-removal rate (referencing FZ/T01100-2008, tested by a national authority) |
| Main end applications | Premium vehicle air purifiers; household/desktop compact air purifiers; maternal-infant health appliances |
| Dimensions and customisation | Full OEM/ODM support. Tooling and contract manufacturing for different outer diameters, inner diameters, heights, and filtration-efficiency splits |
| Quality system | Produced with 20,000 m² of cleanroom capacity; IATF 16949 automotive quality management and ISO 9001/14001 certified for automotive-grade consistency |
Thesvin operates under IATF 16949, the automotive quality management system obtained in 2024, and applies IQC, IPQC, and OQC control across the production flow. For a cylindrical filter, that discipline matters most at the pleat pack: incoming media is checked at IQC, the pleating and end-face cutting are monitored at IPQC, and finished cartridges are inspected at OQC for diameter, height, and visual pleat integrity. This is how dimensional consistency is held from one batch to the next.
The company's own laboratory is CNAS-accredited and can issue test reports for filtration efficiency, dust holding capacity, and resistance. Production takes place in a 50,000 m² facility, including 6 cleanrooms totalling 20,000 m², under ISO 9001, ISO 14001, and ISO 45001 systems. Products meet REACH and RoHS requirements, and compliance documents are available on request. With more than 20 years of filtration R&D and manufacturing, and more than 20 years of continuous export to Europe, the United States, Japan, and South Korea, Thesvin supports OEM/ODM programmes covering dimensions, structure, media grade, frame material, logo, and packaging, with more than 1,000 filtration solutions developed to date. Multiple automated lines support monthly output in the millions of pieces.
To move from a drawing to a quoted, sample-backed part, send the device or vehicle model, the size or drawing (outer diameter, inner diameter, height), the airflow or water flow of the host unit, the operating conditions (temperature, humidity, duty cycle), and the quantity you expect per order. If you do not have a drawing, an old part is enough to start. Contact Thesvin at /en/contact and the engineering team will confirm the interface and propose the next step.
Fitment is confirmed by three dimensions: outer diameter, inner diameter, and height. Send these from your drawing or measure an old part, and Thesvin will match the cartridge to your intake chamber. Because the filter is a 360° annular element that seals on its end faces, the cut accuracy of the pleat pack is what keeps it seated without bypass.
Yes. A used cartridge is enough for Thesvin to reverse-check the outer diameter, inner diameter, height, and end-face seal geometry. If you also have a 3D file or step drawing of the housing, include it so the clearance to the motor hub and housing wall can be verified before tooling.
The filter captures PM2.5, pollen, pet dander, cigarette particles, and dust aerosols through its HEPA media, and the treated media inhibits influenza A virus, E. coli, and Staphylococcus aureus. Mite-removal performance is up to 82.4%, tested to FZ/T01100-2008 by a national authority. The anti-microbial function reduces microbial load on the filter surface and is not a room-air sterilisation claim.
Yes. Thesvin supports full OEM/ODM tooling for different outer diameters, inner diameters, heights, and filtration-efficiency splits. This means a new purifier platform can specify its own envelope rather than adapting to an off-the-shelf size. Logo, packaging, and frame material can also be customised under the OEM/ODM programme.
For this cylindrical filter, standard configurations typically start at 1,000–2,000 pieces, while customised specifications range from 2,000–5,000 pieces depending on complexity; these are negotiable. Standard stock orders ship in 7–15 days, and custom orders take 25–35 days for mass production after sample approval.
Yes. Existing standard samples can be sent in 3–5 working days, and custom samples usually take 7–15 working days to develop. Sample costs depend on the specification and can be credited against a formal order. Samples can be accompanied by a CNAS laboratory performance report for evaluation.
In normal household use at about 8 hours per day, a replacement interval of 6–12 months is recommended. In commercial high-load use, 3–6 months is more appropriate. The actual interval depends on the dust load and the airflow of the host device, so the media configuration can be tuned to balance performance and service life.
Send the device or vehicle model, the size or drawing, the airflow of the host unit, the operating conditions, and the quantity you expect. Thesvin will confirm the interface and reply with a quotation and sample plan. Use the contact page at <a href="/en/contact">/en/contact</a> to start.