GB/T 37826-2019 applies to aircraft electrically heated glass and similar products. It specifies test methods for key electrical performance indicators such as heater resistance, insulation resistance, heating power, heating uniformity, and resistance to electrothermal shock, and clarifies corresponding environmental conditions and operational requirements, providing a unified basis for product performance testing. Relevant testing instruments include digital multimeters with an accuracy of ≥1.0 grade, DC bridges, and megohmmeters, coupled with adjustable regulated power supplies with a voltage range of 0V–500V, thermal imagers with a temperature measurement range of -30°C to 150°C, and environmental test chambers with a temperature range of -70°C to 150°C, ensuring accurate testing of all performance indicators.