There is also the fact that although direct labor may not be a large % almost everything needed to create and maintain the plant is produced by China with cheap

There is also the fact that although direct labor may not be a large % almost everything needed to create and maintain the plant is produced by China with cheap labor (including exotic things like rare earth metals). This is the ole McDonalds econ effect (McDonalds owns their own farms etc..) of controlling production of all upstream things to provide better price and leverage. Besides regulation there is also the fact that China has a government where eminent domain and relocation citizens to other homes is not a problem.