The types segment classifies high‑purity indium based on physical form and purity grade, each influencing market valuation differently. Metallic indium, supplied as ingots or granules, is the most widely traded form; within this, 99.99 % purity material dominates due to cost‑effectiveness for bulk alloying, while 99.999 % purity caters to semiconductor and optoelectronic applications requiring stringent impurity control. Indium compounds, notably indium tin oxide (ITO) and indium phosphide (InP) precursors, represent a specialized niche; ITO, used in transparent conductive coatings, drives a substantial share of the compound market, whereas InP precursors are critical for high‑performance photonic devices. Finally, indium alloys—such as indium‑gallium‑zinc oxide (IGZO) and low‑melting solder alloys—are valued for their tailored physical properties, supporting sectors like flexible electronics and aerospace. By differentiating these types, the market taxonomy clarifies how product specifications and purity levels translate into distinct revenue streams within the overall High Pure Indium market.