This kind of air filter cartridge can be made into a simple HEPA filter cartridge, or it can be combined with a compact HEPA filter paper and activated carbon filter, which can remove PM2.5, odor, TVOC, formaldehyde, etc. After the internal filter paper is pleated, it is packaged together with the activated carbon layer in the PVC end cap to form a cylinder, which is suitable for the filter system with large air flow and customized according to different requirements.

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