Excavators, wheel loaders and mining trucks operate under heavy loads in mines, job sites and dusty regions where airborne dust concentrations are extremely high. Their air filters therefore require far greater filtration capability than ordinary vehicles — and the filter paper is the core that makes this possible. Mining & construction air filters typically adopt a multi-stage design of "cyclone pre-cleaner + primary filter element + safety element": the pre-cleaner removes large dust particles first, the primary element handles the main filtration task, and the safety element provides back-up protection.
