Segmentation by type differentiates the API into generic, branded, and custom‑synthesis categories, each reflecting distinct value‑chain positions. Generic Tenofovir Disoproxil Fumarate, produced by multiple contract manufacturers, captures the bulk of volume due to its price‑sensitive market and extensive patent expirations; it contributes the largest share of revenue despite modest margins. Branded API, supplied exclusively to originator firms, commands higher pricing and tighter quality controls, representing a smaller but financially significant portion of the market, especially in regions with stringent regulatory pathways. Custom‑synthesis services—tailored batches for niche indications, pediatric formulations, or clinical‑trial supply—form a specialized niche, accounting for a minor fraction of total sales but offering higher per‑kilogram returns. Understanding these type‑based distinctions clarifies the market taxonomy, guides investment in capacity expansion, and aligns R&D focus with the evolving demand landscape.