What is 4m ,5s, apqp ,ppap, quality circle

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4M, 5S, APQP, PPAP, and Quality Circle are all quality management tools used in manufacturing.

4M stands for Man, Machine, Material, and Method and is used to identify the root cause of a problem.
5S is a workplace organization method that stands for Sort, Set in Order, Shine, Standardize, and Sustain.
APQP stands for Advanced Product Quality Planning and is a framework used to ensure quality in new product development.
PPAP stands for Production Part Approval Process and is used to ensure that suppliers have met all requirements before production begins.
Quality Circle is a group of employees who meet regularly to identify and solve quality-related problems.

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