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Improving the efficiency of solving problems and getting experience of solving problems; outlining the factors involved in product quality; reducing even avoiding the same problems. Based on the 8D method we can find out the fundamental reasons for the problems, put forward the short-term, mid-term and long-term solutions.
 We also can establish inter-departmental group to strengthen connection between departments, promote the solution of the problem, and prevent the same or similar problems happened again and ensure product quality.