Types segmentation classifies the chemical families of fluorine‑based etchants, each contributing differently to the overall market size. Carbon tetrafluoride (CF₄) and octafluorocyclobutane (C₄F₈) dominate the mix, together representing approximately 48 % of volume, due to their versatility in silicon and dielectric etching across multiple applications. Nitrogen trifluoride (NF₃) accounts for roughly 22 %, favored for its high etch rate and lower greenhouse‑gas impact when recycled, making it prominent in advanced node semiconductor processes. Sulfur hexafluoride (SF₆), despite regulatory pressures, still holds about 15 % share, primarily in high‑voltage device fabrication. Emerging perfluorinated compounds (e.g., C₆F₁₄) capture the remaining 15 %, driven by niche requirements for low‑damage etching in display and photovoltaic contexts. Understanding this market taxonomy of gas types enables manufacturers to align product portfolios with regulatory trends and technology roadmaps, thereby optimizing revenue distribution across the Fluorine Containing Etching Gas market.