NdFeB Magnet Market Size & Forecasts 2026-2035, By Segments (Grade, Application, Coating, Shape, End User Industry), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (VACUUMSCHMELZE, Arnold Magnetic Technologies, Hitachi Metals, Shin-Etsu Chemical, Ningbo Yunsheng)