Segmentation by type distinguishes four core categories: positive‑tone, negative‑tone, chemically amplified, and dry‑film photoresists. Positive‑tone resists, comprising about 40 % of sales, are favored for their straightforward development profile and are predominant in PCB and MEMS lines where fine line definition is critical. Negative‑tone resists, representing roughly 25 % of the market, offer superior etch resistance and are preferred in semiconductor processes that demand high aspect‑ratio plating. Chemically amplified resists, accounting for 30 % of revenue, dominate advanced semiconductor nodes because their low exposure energy enables sub‑20 nm patterning essential for next‑generation interconnects. Dry‑film resists, a smaller niche at 5 %, are employed in large‑area applications such as flexible electronics where spin‑coating is impractical. The distribution of these types directly influences the overall market size, as each fulfills unique technical requirements that drive procurement volumes across the application spectrum.