Electrical performance testing is a test that evaluates various performance indicators of a system by simulating various normal, peak, and abnormal conditions using professional testing tools, mainly including basic performance testing, environmental reliability testing, device reliability evaluation, and other tests. Test items: Resistance testing Test items: Volume resistivity, surface resistivity, DC resistance, insulation resistance, contact resistance, grounding resistance, equivalent series resistance, and other voltage tests. Test items: voltage testing, overvoltage, breakdown voltage, reverse voltage, superimposed AC voltage, power supply voltage interruption, etc. Current testing items: current testing, leakage current testing, etc. The purpose of temperature rise testing is to test the temperature rise of important components (IC chips, etc.) of electronic products in order to verify their reasonable design for service life, stability, and other characteristics. Purpose of voltage withstand test: Voltage withstand test can detect local defects, moisture, and aging of insulation; There are two types of tests: power frequency withstand voltage test and DC withstand voltage test. Test products: electrical appliances, electrical equipment, electrical devices, electrical circuits, and electrical safety equipment. Purpose of dielectric constant testing: The dielectric constant is the main parameter that reflects the dielectric or polarization properties of piezoelectric smart materials under the action of an electrostatic field. The polarity of polymer materials can be determined based on the dielectric constant of the material. Related products: semiconductors, superconductors, capacitors, substrates, PCBs, sensors, ceramics, composite materials, polymers, rubber, plastics, coatings, etc