To sum up, it is analyzed that there are foreign matters (dropped products or aluminum shells, etc.) on the machine platform during the assembly process, which are not cleaned timely by personnel, resulting in skewness of the assembly of the element and the rubber cover; after the assembly and sealing, the rubber cover presents skewness and convexity. Due to the negligence of the appearance inspection personnel, they failed to find and remove the defect in time, which resulted in the outflow of the defect to your company.
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