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The thriving of the U.S. manufacturing sectors of the post-war era had created the economic boom and the rise of middle bule-collar class in last century, which made America the most prosperous country on this planet. However, it seems that the golden age of manufacturing is over. Figure 1 Fort, Pierce, et al. (47) pointed that the employment rate of manufacturing industries kept swiftly increasing since 1948 and reached a summit at approximately 20 percent, whereas it began to experience a sharp decline since 1998 even reached less than half of the level of 2010, Figure 2 in addition to the fluctuation of added-value of manufacturing, which is also unsatisfactory
Guanhong Liu (Thu,) studied this question.