Expandable Graphite Market by Type of Graphite (Natural Expandable Graphite and Synthetic Expandable Graphite), Type of Form (Blocks, Flakes, and Powder), Application Area (Conductive Additives, Flame Retardants, Flexible Graphite, and Others), Sales Channel (Direct Sales, Distributors & Traders, and Online Retail), End User and Geographical Regions and Key Players – Trends and Forecast 2026-2035