A synthetic pocket filter is pocket-type, intermediate-level filters used in air purification and ventilation systems; it captures dust particles and suspended matter in the 1 to 5-micron (μm) range and protects downstream high-efficiency filters.

The G4 pocket filter features a bag-style structure and offers a gravimetric efficiency of over 90% for particles larger than 5 microns; it is commonly used for pre-filtration in ventilation and air conditioning systems.

The DPA pocket filter is a high-efficiency air filtration unit designed specifically to capture over-spray paint mist in dry-type spray booths; its core features a special synthetic fiber material and a 3D honeycomb-like, multi-layered structure.

Activated carbon adsorption units are primarily designed to treat various organic and inorganic pollutants—including benzene, ketones, alcohols, ether, alkane, mixed organic waste gases, as well as acidic and alkaline exhaust gases. They are suitable for the purification of harmful exhaust gases generated in sectors such as pharmaceuticals, metallurgy, chemicals, machinery, electronics, electrical appliances, coating, footwear, rubber, plastics, and printing, as well as for environmental applications involving desulfurization and deodorization in various industrial production workshops.