Guangzhou Radio and Television Metrology and Testing

Guangzhou Radio and Television Metrology and Testing (also known as 广州广电计量检测股份有限公司, GRGTEST) is a company that provides measurement calibration and electromagnetic compatibility testing services. It offers equipment maintenance, radio metering, electromagnetic metering, thermal metrology, time-frequency measurement, and other services. The company caters to the aviation, communication electronic appliances, rail transit, and other sectors.