To master the basic concepts and principles of design of experiment (DOE); to master how to apply factorial experiment from many factors screening to identify the main factors affecting the output, to exchange the maximum benefits with the least input; to master how to factor level optimized best lose out, so that the product quality can be improved, process flow, process optimization, to scientifically and reasonably arrange the test, reduce the number of tests, shorten the test cycle, raise economic benefits; to master how to use Minitab software to design of experiment (DOE) design, data analysis, optimization factor and predictive output.