The type dimension of the Slot Coating Die Head of Battery market is primarily divided into metallic, ceramic, and polymer die heads. Metallic die heads, typically fabricated from stainless steel or nickel alloys, dominate the segment due to their superior thermal conductivity and mechanical robustness, which support high‑speed coating lines and extended service life. Ceramic die heads, often based on alumina or silicon carbide, offer enhanced chemical resistance and precision machining capabilities, making them suitable for ultra‑thin coating applications where surface integrity is critical. Polymer die heads, constructed from high‑performance engineering plastics such as PEEK, provide lightweight handling and lower capital expenditure, but their lower thermal stability limits use to lower‑temperature processes. Each type contributes proportionally to total market size: metallic heads account for roughly 55 % of revenue, ceramics 30 %, and polymers 15 %, reflecting the balance between performance demands and cost considerations across battery manufacturers.