Segmentation by type distinguishes the processing routes that affect physicochemical attributes and consequently market positioning. Refined castor seed oil, the most widely traded grade, undergoes neutralization, bleaching and deodorization, delivering a clear, low‑odor product suitable for cosmetics and pharmaceuticals; it commands the largest volume share (≈45 %). Cold‑pressed oil, extracted without heat, retains a higher concentration of native antioxidants and ricinoleic acid, appealing to niche natural‑product manufacturers and contributing about 20 % of sales despite higher price points. Hydrogenated castor oil, produced by catalytic saturation, exhibits increased melting point and oxidative stability, making it a preferred raw material for polymer and rubber compounds, and accounts for roughly 15 % of the market. Semi‑refined oil, which skips full deodorization, balances cost and functional performance for industrial lubricants and bio‑polyol synthesis, representing near 12 % of volume. Specialty grades, such as esterified or fractionated variants, occupy the remaining 8 %, driven by specific performance requirements in high‑value applications.