<![CDATA[This research was conducted to find the cause of defect and the cause of incoming raw materials defect from suppliers into the company. The research is focused on three largest local supplier of PT. X, which are Supplier A, Supplier B, and Supplier C. The cause of incoming raw material defects are identified during define, measure, and analyze phase in DMAIC. The causes that have been found are the carelessness of the operator, lack of understanding of the product, unsuitable material, technical fault during injection, lack of control from the company, and the mold lifetime’s that has exceeded the warranty. Improvements that have been done are provide training for suppliers in the form of visual management training and part education, control of the test plan, and the replacement of molding. The performance of each supplier was controlled by creating a supplier quality performance. The results of supplier quality performance will be used for taking action against the supplier.]]>
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