This study considers the modified Shin et. al.’s [14] model with process control and tolerance. In the first phase, the process parameters setting model considers Taguchi’s quadratic quality loss and process cost of product for obtaining the original values of mean and standard deviation. Then the second phase, i.e., the tolerance setting model considers the process promotion with quality investment. The optimal tolerance can be also determined under the 100% inspection under the specified Cpkm  value and sampling inspection with specified Cpkm value and consumer’s risk, respectively. The numerical result are described for explanation.