Third. quality controlEstablishment of color management systemFormulate color management processes and standards, and clarify the methods, equipment and frequency of color testing.Provide professional training for testing personnel to ensure that they are familiar with color testing equipment and processes.Regularly calibrate equipmentRegularly calibrate and maintain testing equipment such as spectrophotometers and colorimeters to ensure the accuracy of measurement results.Record calibration results and maintenance for traceability and inquiry.Implement first article inspection and process inspectionAt the beginning of production, the first batch of labels are color tested to ensure compliance with customer requirements.During the production process, take label samples regularly for color testing to detect and correct color deviations in time. Fourth.problem solvingAnalyze the causeWhen the label color is found inconsistent with customer requirements, the first need to analyze the reasons. Possible reasons include ink quality problems, improperly set parameters of the printing process, environmental factors (such as temperature, humidity) impact.Take measuresAccording to the analysis results, take appropriate measures to correct. For example, replace the ink, adjust the printing process parameters, improve the production environment, etc.Verification of EffectivenessAfter taking measures, conduct color testing on the label again to verify whether the effect meets the customer’s requirements.If there are still problems, it is necessary to continue to analyze the causes and take further measures.