Guang Zhou GRG Metrology & Test Co., Ltd. operates as a third-party metrology and testing company. Its services include measurement and calibration; electromagnetic compatibility testing; chemical analysis; reliability and environmental testing; environmental monitoring; and food detection. The company serves petrochemical, communication, aviation, automotive, electric power, medicine, electrical and electronic devices, shipping, and rail transit industries. It was formerly known as Guangzhou Guangdian Metrology Testing Technology Co., Ltd. and changed its name to Guang Zhou GRG Metrology & Test Co., Ltd. in November 2011. The company was founded in 1964 and is based in Guangzhou, China. Guang Zhou GRG Metrology & Test Co., Ltd. operates as a subsidiary of Guangzhou Radio Group Co., Ltd.