Our circular HEPA filter element has a standard filtration efficiency that can reach H11-H13 grade (for 0.3μm particles, filtration efficiency ≥99.95%), effectively intercepting fine particles such as dust, pollen, dust mites, pet hair, and PM2.5. The product widely adapts to replacement filter needs for mainstream handheld vacuum cleaner brands like Dyson, Xiaomi, Midea, Philips, and Bissell. If customers have specific model specifications, we can accurately match and develop based on samples or drawings.

Yes, Cleantop has over 20 years of experience in developing and manufacturing filters, providing OEM/ODM services to numerous brands in Europe, America, and Japan. Customization includes filter diameter, thickness, pleat count; filter material selection (glass fiber HEPA, PP melt-blown, PTFE, electrostatic cotton, etc.); end cover materials (ABS, PP, rubber); whether to incorporate an activated carbon layer (for odor removal); as well as customer-specific logos, color boxes, manuals, and blister packaging solutions. The sample development cycle is generally 7-15 days.

Cleantop is certified by ISO 9001, ISO 14001, and ISO 45001, and will receive IATF 16949 automotive industry certification and medical GMP certification in 2024. Products hold several international certifications including Europe BSC1, USA EPA, NSF, SGS, and the filter materials comply with REACH and RoHS environmental standards, fully meeting the compliance requirements for household appliance parts in the European and American markets, and can assist customers with related export testing reports.

Cleantop has a factory of 50,000㎡ and six clean workshops covering 20,000㎡, and has a nationally recognized CNAS testing center. From raw material entrance (IQC), production process (IPQC), to finished product shipment (OQC), strict inspections are conducted. The HEPA filters are 100% tested through PAO leak detection or flow pressure difference testing. The CNAS laboratory can provide professional test reports on filtration efficiency, dust capacity, resistance, combustibility, etc., ensuring consistent performance across each batch.

The standard product MOQ is typically 3,000 units, whereas the MOQ for custom molds is based on specific specifications, generally starting from 5,000 units. The regular order delivery time is 25-35 days after placing the order; for peak seasons or large-volume orders, early confirmation for production scheduling is recommended. We have multiple automated production lines and ample raw material reserves to ensure stable delivery for large orders. Long-term cooperative customers can also enjoy VMI inventory management services.

We welcome clients to request sample testing. Existing conventional stock models can provide 1-3 free samples; clients bear the international courier fees (supporting DHL/FedEx/UPS freight collect). For custom developed samples, a certain sampling fee is charged based on complexity, which can be deducted from the order payment once placed. We encourage clients to send samples to third-party laboratories for comparative testing to provide data-supported results.

The recommended replacement cycle depends on usage frequency and environment; generally, in home use scenarios, it is 3-6 months. We offer two types of processes: non-washable (traditional glass fiber HEPA, with higher filtration efficiency) and washable (using PTFE or modified PP filter materials, can be washed with clean water and reused for 6-12 months). Clients can choose the appropriate option based on end-market positioning, and we will clearly mark usage instructions on the packaging and manual.

We accept various payment methods including T/T, L/C, and Western Union. Typically, a 30% deposit and 70% paid before shipment is standard, and old customers can negotiate payment terms. Trade terms support EXW, FOB, CIF, DDP, etc. Cleantop has serviced many brand clients in Europe, America, and Japan, providing VMI inventory management, annual framework agreements, and exclusive mold storage for long-term strategic cooperation. Long-term supply solutions are welcome to negotiate.