Within the types dimension of the market taxonomy, coil coating and extrusion coating diverge in process methodology and product outcomes. Coil coating involves continuous metallurgical treatment of flat steel or aluminum sheets before fabrication, delivering uniform thicknesses of primer, intermediate, and topcoat layers that can be tailored for corrosion protection, heat reflectivity, or decorative finishes. Extrusion coating differs by applying a polymeric film onto a substrate—typically metal or plastic—through a melt‑extrusion die, producing a composite laminate with enhanced barrier properties, chemical resistance, and flexibility. Sub‑types of coil coating include pre‑painted steel, pre‑painted aluminum, and high‑performance specialty alloys, each targeting niche performance criteria such as high‑temperature tolerance or electromagnetic shielding. Extrusion coating sub‑types encompass PVC‑based laminates, PET‑based films, and fluoropolymer coatings, selected for specific environmental exposures and mechanical demands. The distinct technological pathways and material selections of each type directly influence cost structures, supply‑chain dynamics, and ultimately the total addressable market.