The reason why Mexico manufacturers ranked high in the world economy is because they are well known in manufacturing. Mexico manufacturers produce both domestic and international products. Based on the historical record, quite a great number of manufacturers started their manufacturing in Mexico with very basic assembly operations but turned out into successful companies.
Personally think that Mexico manufacturers are as good as China manufacturers and you can find many skillful employees there. The impact of Mexico manufacturers on US economy is similar to the impact of China manufacturers to the Asian economy. But, they also had its toughest time during year 2001 to 2003 because of the slowdown in the economy of U.S and the impact of China as a competitor of low cost manufacturing.