Coil Materials: Heavy-duty Hot-Dip Galvanised (HDG) Steel, 304/316 Stainless Steel, or Premium Copper. Casing Construction: Corrosion-resistant Z700 galvanized steel or lightweight Fiberglass (FRP). Operational Modes: Wet Mode (evaporative cooling for summer) and Dry Mode (sensible air cooling for winter water savings). Fan Types: High-volume Axial (Induced Draft) or Ultra-Quiet Centrifugal (Forced Draft). Spray System: Independent, low-head recirculating pump with clog-free large-orifice PVC nozzles. Fluid Compatibility: Water, Water-Glycol mixtures, Hydraulic Oils, and Process Fluids.