Segmentation by type distinguishes the physical form in which Electronic Grade Trimethylboron is supplied, each influencing logistics, handling costs, and end‑use efficiency. The liquid form, comprising 55 % of the market, is favored for batch‑type CVD reactors because it enables accurate metering via syringe pumps and reduces storage pressure requirements. The gaseous variant, contributing 30 %, is essential for continuous‑flow systems and high‑throughput semiconductor lines where on‑site vaporization minimizes contamination risk. The remaining 15 % is the solid precursor, primarily used in specialized research settings and niche processes such as low‑temperature plasma‑enhanced deposition, where solid‑state handling offers superior shelf‑life. By delineating these sub‑types, the taxonomy clarifies how each form supports distinct manufacturing architectures and cost structures, thereby shaping the overall market composition.