Electric Heat Tracing Market by Type of Product (Controllers & Monitoring Systems, Heating Cables, Power Connection Kits, Thermal Insulation Materials, and Others), Type of Technology (Constant Wattage, Mineral Insulated, Self-regulating, Skin Effect, and Others), Application (Floor Heating, Freeze Protection, Process Temperature Maintenance, Roof & Gutter De-icing, and Others), Installation, Industry Vertical, Sales Channel, Geographical Region, and Key Players - Trends and Forecast 2026-2040