Those wages are abysmally low for the industry. The absolute top end of the pay range of a technician is $54k a year according to your link. Technicians at the Intel plant down the street start at $70k a year. A PHd level chemical engineer with a top end of $95k a year? That's peanuts.
I can assure you that they are not actually paying poorly. For the majority of US hires still in the program (attrition is accelerating), pay rises, bonuses, and other monetary incentives are the key ingredient. The ROC employees get quarterly bonuses, mind-boggling amounts of overtime, and many other killer benefits that keep them in jobs that treat them very poorly. The majority of their pay can often be overtime and bonuses, which do not factor into their posted "salary". Most of the cars in those parking garages are BMWs, Teslas, and other fancy cars. Money is not a problem. Also, most of the US hires were denied their "target" bonuses and pay increases for a "secret S-" performance rating, where they appear to have met all measures for the performance target but are penalized by 25% of their bonus for not "working like a Taiwanese," and even then most are staying because the money is that good, and leaving is that hard. The trainees are looking at being fined 15-25k USD for leaving the company, too, which does impact the financial equation, but all the technicians I worked with were quite happy with their pay, as were the EEs, PEs, etc. A lot got lured away from their former companies with 20+% pay increases. Money isn't a problem.