(For Paint Booths, Dry Filter Spray Booths, DPA Paint Mist Filtration Systems)   1. Core Features ✅ Three-Stage Filtration System - Pre-filtration layer: Stainless steel mesh intercepts particles ≥100μm   - Primary filtration layer: Gradient-density polyester fiber bags (6-12 bags)   - Post-filtration layer: Fiberglass...