Investigation summary: nine unused samples in sealed package were returned for evaluation.During the dhr review, there was no similar non- conformance observed during out-going inspection.For the duration of the last 12 months, there was no quality notification raised for a similar non-conformance.Investigation conclusion: the nine samples were subjected visual inspection for hooked point and damaged point.During the visual inspection, there were no abnormality observed on the 9 samples.Results of the visual inspection show that the 9 samples are within specification.Root cause description: from the samples, there was no abnormality observed during visual inspection.Rationale: if more information were received in the future the complaint will be re-opened and re-investigated.
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