The Types axis of the UHP Gas for Semiconductor segmentation differentiates the market by chemical species, chiefly UHP nitrogen, UHP argon, UHP helium, and UHP hydrogen. UHP nitrogen dominates the mix, serving as a carrier and purge gas across all front‑end processes; its ubiquity translates into the highest revenue contribution despite its relatively low unit price. UHP argon, valued for its inertness, underpins plasma‑enhanced etching and sputtering, capturing a significant mid‑range share. UHP helium, though costlier, is essential for high‑temperature annealing and rapid thermal processing where thermal conductivity is a performance lever. UHP hydrogen, required for reduction reactions in epitaxy and certain cleaning steps, occupies a niche but high‑margin segment. The relative weight of each type mirrors process‑specific purity thresholds and equipment design, collectively shaping the total market valuation by aligning supply‑side pricing with demand‑side technical specifications.