Automotive Diff Drive Pinion Gear Market Size & Forecasts 2026-2035, By Segments (Vehicle Type, Transmission Type, Gear Ratio, Pinion Type, Material), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (ZF Friedrichshafen, Dana Incorporated, Aisin Corporation, JTEKT Corporation, Schaeffler AG)