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  Market Overview The Polyester Film for Heat Resistant Capacitors Market plays a vital role in the broader electronic components ecosystem, particularly as industries demand compact, durable, and thermally stable capacitor solutions. Polyester films are widely used as dielectric materials in capacitors due to their excellent electrical insulation, mechanical strength, and cost efficiency. The global Polyester Film for Heat-Resistant Capacitors market size is predicted to grow from US$ 319 million in 2025 to US$ 480 million in 2031; it is expected to grow at a CAGR of 7.1% from 2025 to 2031. When engineered for heat resistance, these films support stable capacitor performance under elevated temperatures, making them suitable for applications in automotive electronics, industrial machinery, consumer electronics, and power systems. Growing electrification, miniaturization of electronic devices, and increased use of capacitors in high-temperature environments continue to strength...