Our cylindrical activated carbon filter uses high-quality coconut shell or coal-based activated carbon as the adsorption medium, with an iodine value reaching 800-1200 mg/g, exhibiting excellent adsorption performance for harmful gases such as VOCs, odors, formaldehyde, benzene, and sulfur dioxide. Under normal usage conditions, the filter's lifespan can reach 6-12 months (specific lifespan depends on the concentration of pollutants and airflow in the environment). The product is widely applicable in scenarios such as air purifiers, fresh air systems, commercial kitchen odor removal, laboratory ventilation, and industrial waste gas pretreatment. Leveraging over 20 years of R&D experience, we can provide targeted carbon species ratio solutions according to customer actual working conditions.

Cleantop has passed ISO 9001, ISO 14001, and ISO 45001 certification, and holds product certifications from European BSC1, US EPA, NSF, and SOP; in 2024, we further obtained IATF16949 and medical device GMP certification. Our products have been exported to countries and regions such as Europe, America, Japan, and South Korea. We can provide customers with compliance documents such as MSDS, ROHS, REACH, CE, etc., fully supporting customers' compliance sales and customs needs in target markets.

We offer comprehensive OEM/ODM customization services, which is one of our core strengths. Customizable content includes: filter dimensions (inner diameter, outer diameter, height), type and weight of activated carbon, honeycomb or granular structure, end cap material (metal/plastic/paper frame), adding functional coatings (formaldehyde removal, antibacterial, ozone removal, etc.), logo printing, and exclusive packaging design. We have a professional R&D team that can develop 1:1 according to customer drawings or samples, usually providing samples within 7-15 days.

Cleantop has a factory area of 50,000㎡ and 20,000㎡ of clean workshops, equipped with a nationally recognized CNAS testing center, capable of independently completing tests for key indicators such as particulate filtration efficiency, formaldehyde CADR, TVOC adsorption capacity, and wind resistance. We implement a three-tier quality control process from raw material acceptance to production process and finished product delivery, with sample retention and COA testing reports for each batch of products. The IATF16949 certification system further ensures high consistency between batches, meeting the quality requirements of demanding customers.

The MOQ for standard models is usually 500-1000 pcs, and for custom models, it depends on the complexity of the structure, generally ranging from 2000-3000 pcs. We also welcome sample orders for customers to validate in the early stages. Regarding delivery: standard product stock is usually shipped within 3-7 days; for custom products, batch delivery is approximately 15-25 days after sample confirmation. During peak seasons or for large orders, we will communicate production scheduling with customers in advance to ensure timely delivery.

We support customers in requesting samples for testing and verification before placing orders. Standard size samples can usually be provided free of charge, with customers bearing international shipping costs; custom size samples require a certain sampling fee based on development costs, which can be deducted from payment upon bulk ordering. We recommend that customers connect with our technical team at the early project initiation stage so we can provide the most suitable sample solutions and shorten the project development cycle.

Absolutely. As a professional manufacturer with thousands of filtration solutions, we can provide comprehensive solutions, including HEPA + activated carbon composite filters, cylindrical/square combined filters, and multilayer structure filter elements for air purifier brand owners. Our engineering team can optimize matching based on customer air duct design, CADR target values, and lifespan requirements, and provide third-party test reports to assist customers' products in passing standards such as AHAM and GB/T18801.

The standard packaging uses independent PE bags + colorful inner boxes + export-standard outer boxes to ensure that products are not damp or deformed during transportation. We support comprehensive retail packaging customization services, including customer brand colorful box design, multilingual printing of manuals, anti-counterfeiting labels, barcodes/UPC codes, etc., allowing for direct delivery of retail-ready products, helping traders and brand customers save secondary packaging costs and accelerate market launch cycles.