The certificates of conformity of maintenance and repair testing equipment, and the certificates of inspection or calibration of relevant measuring instruments;
维修检测设备的合格证明及相关计量器具的检定合格证书或者校准证书；
The certificates of conformity of maintenance and repair testing equipment, and the certificates of inspection or calibration of relevant measuring instruments;
维修检测设备的合格证明及相关计量器具的检定合格证书或者校准证书；
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