However, when an enterprise accepts the audit, it generally requires personnel to have the calibration ability, but there is no specific requirement that they must be the internal calibrator of the measurement. However, enterprises are usually required to provide certificates as proof of personnel's ability.

The higher qualifications of calibration personnel are first-class registered surveyors and second-class registered surveyors.

Those who have participated in the training in the past can consult the Radio and Television Quality Institute. It is a subsidiary of Guangzhou Radio and Television Metrology and Testing Co., Ltd. approved by CNAS, which is responsible for the training of internal staff of the school. After years of intensive cultivation in this field, we have developed a number of high-end derivative courses related to metrology, such as "Measurement School Staff Class", "First Class Registered Metrologist Training Class", "Second Class Registered Metrologist Training Class" and "Enterprise Metrology Management".