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The Thesvin pet toilet filter cartridge is a replacement odor-control filter for smart cat litter boxes, automatic pet toilets, pet fresh-air cabins and pet deodorizer units. It combines high-iodine coconut shell activated carbon with PET structural material to adsorb ammonia, TVOC and other volatile odors from pet waste. It is designed for pet-product brands and OEM/ODM customers who need a filter that fits their existing device cavity and can be customised in size, shape and packaging. Thesvin manufactures it in Zhongshan, Guangdong, China, with dimensions tailored to your mould or drawing.
Fitment comes first. This cartridge is not a universal drop-in pad; it is made to match the host device’s filter slot, so the frame and outer dimensions are agreed before production. Thesvin works from your 3D model, 2D drawing or a physical sample of the old part, and can provide cutting, edge sealing and special-shape processing to suit the cavity. That means the finished cartridge follows the contours of the slot rather than forcing the user to modify the unit.
The PET structural material gives the filter a stable shape that holds its position in the housing. Because the carbon is enclosed in a breathable non-woven wrap, the cartridge presents a flat, low-resistance face to the airflow path used by the device. The interface is therefore defined by three things: the outline that locates the part, the thickness that fits the slot, and the airflow face that must not be blocked by packaging or excess material. When you send a drawing or old part, Thesvin checks these three points and confirms the fit before tooling or cutting.
For devices that use a tray, cassette or drawer, the cartridge can be supplied in the matching outline with sealed edges to keep carbon in place during handling and replacement. Thesvin does not invent a mounting method for your device; the fit is based on the geometry you provide. This approach keeps the replacement part consistent from batch to batch and makes it easy for end users to swap the filter without tools.
The core material is high-iodine coconut shell activated carbon, chosen for its high specific surface area and its ability to adsorb odor molecules such as ammonia and hydrogen sulphide that come from pet waste. In practical use, the cartridge targets ammonia, TVOC and other volatile odours released inside a litter box or pet toilet enclosure. The carbon is paired with an environmentally friendly PET material and a breathable non-woven covering layer, so air can pass through while the carbon does the adsorption work.
Thesvin rates the odour-removal efficiency at over 90% under its test conditions. That figure is not a guarantee for every installation, because real-world performance depends on pet count, device running frequency, humidity and the volume of air moved through the filter. What the construction does provide is a high-porosity airflow path that keeps resistance low enough for the small fans used in smart litter boxes and pet cabins. The result is a filter that supports the device’s ventilation loop rather than choking it.
The cartridge is intended for embedded use in equipment such as smart cat litter boxes, automatic pet toilets, pet fresh-air cabins and pet deodorizers. It is not a room air purifier filter and it is not intended for medical or respiratory therapy use. Its job is to reduce the odour load close to the source, inside the appliance, before air is returned to the room.
| Item | Detail |
|---|---|
| Product name | Pet toilet filter cartridge / pet deodorizing activated carbon filter |
| Core material | High-iodine coconut shell activated carbon with environmentally friendly PET material |
| Core function | Adsorbs odours and removes ammonia, TVOC and other volatile odours from pet waste |
| Application | Embedded filters for smart cat litter boxes, automatic pet toilets, pet fresh-air cabins and pet deodorizers |
| Dimensions | Customised on request; cutting, edge sealing and special-shape processing to suit customer moulds and device cavities |
| Recommended replacement interval | 1–3 months, depending on the number of pets and how often the device runs |
| Production certification standards | ISO 9001/14001, IATF 16949, BSCI, environmentally friendly and non-toxic directives; export-grade quality for Europe and the US |
Dimensional consistency is the backbone of this product. Thesvin operates IATF 16949 (certified in 2024) for automotive-quality process control, and applies IQC, IPQC and OQC checks across the production flow. Incoming coconut shell carbon and PET materials are inspected, in-process cutting and edge sealing are monitored, and outgoing cartridges are checked against the approved drawing before packing. Each batch is sampled and retained so that repeat orders match the original fit.
Thesvin’s own laboratory is CNAS-accredited and can issue test reports covering filtration efficiency, dust capacity and resistance. The 50,000 m² production site includes six clean workshops totalling 20,000 m², where filter media and finished cartridges are handled in a controlled environment. The company also holds ISO 9001, ISO 14001 and ISO 45001 system certifications, and products can be supplied with REACH and RoHS compliance documentation for European and US markets. With more than 20 years of filtration research and manufacturing experience and over 1,000 filtration solutions developed, Thesvin supports OEM/ODM projects from concept to mass production. Multiple automated production lines support monthly output in the millions of pieces.
To get an accurate quote, send the device or vehicle model, the filter size or a drawing, the airflow or water flow of the unit, the operating conditions (pet count, humidity, running hours), and the quantity you need. If you do not have a drawing, an old part is enough to start. Thesvin will confirm fitment, propose the material and packaging, and quote against your target replacement interval.
Contact Thesvin with your details and we will respond with the next steps.
Fitment is confirmed from your drawing, 3D model or old part. Thesvin matches the outline, thickness and airflow face to your device cavity and can apply cutting, edge sealing and special-shape processing. Send the device model and cavity dimensions and we will check the fit before quoting.
Yes. An old cartridge is a practical fitment reference. Thesvin measures the outline and thickness from the sample, confirms the airflow face, and proposes a matching construction. If you have both a drawing and an old part, send both for the most reliable match.
Thesvin rates the cartridge at over 90% odour-removal efficiency under its test conditions, using high-iodine coconut shell activated carbon. Actual performance in a litter box or pet toilet depends on pet count, humidity and device running frequency. A CNAS-accredited test report can be provided with the sample or order.
Yes. Thesvin supports OEM/ODM customisation of the cartridge size and shape, the carbon type and fill amount, the PET structure and non-woven wrap, and the retail packaging with your logo and artwork. Single packs, multi-packs and refill packs are available. Custom work starts from your drawing or old part.
Standard specifications typically start at 5,000 pieces. Customised products depend on tooling difficulty and packaging, generally starting at 10,000 pieces. Standard products ship about 25–30 days after order confirmation and payment; customised products with tooling or printing take about 35–45 days.
Yes. Standard samples already in stock are usually free, with the customer covering international courier cost. Customised samples carry a sampling fee that can be deducted from the bulk order. Samples usually ship within 3–7 working days, and can be accompanied by a CNAS test report and material specification.
The recommended replacement interval is 1–3 months, depending on the number of pets and how often the device runs. Single-cat households can follow the longer end of that range, while multi-cat households may need to replace more often. Thesvin can adjust the carbon fill to match your target replacement cycle.
Send the device model, size or drawing, airflow or water flow, operating conditions and required quantity through the contact page. Thesvin will confirm fitment and propose material and packaging, then provide a quotation. <a href="/en/contact">Contact us</a> to start.