After analysis, if the cause of the defect is caused by the poor raw materials, the quality assurance department shall send a document to all relevant units, timely clean up the site of the raw materials, products in process and finished products, and return them to the IQC warehouse with isolation marks. The IQC supervisor shall contact the supplier, R & D department and other personnel in a timely manner to analyze and confirm that the cause of the defect is caused by the raw materials, and deal with it according to the supplier management procedure as the case may be.<br>
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