Most of the methods used here that help contain it can be used in the US. When you go into a store ( grocery chains, etc ), they spray your hands with sanitizer and take your temp. If temp is too high, not allowed in. ( same goes for the schools ).
The only thing they implemented that probably couldn't be done in the US ( though with some of these governors in blue states, I am not so sure ). It is with the 14 day self quarantine at home. At first it was done on the honor system. But you had people who were not obeying it (there was a case of a foreign homecare worker who was caring for an infected patient, who after she was done for the day was going out to karaoke bars at night, and there was one where a kid in the houshold was supposed to stay at home, but was working in his grandmothers noodle restaurant ). So they cracked down and issued those who were suppose to be at home for 14 days a cell phone that showed their location. Plus they would call it at random times to make sure the person was there. Violation resulted in a $40,000 US fine ( which is more than double the average annual salary here ). Now having said that, these restrictions only work for people that show symptons.
"On January 27, the National Health Insurance Administration (NHIA) and the National Immigration Agency integrated patients’ past 14-day travel history with their NHI identification card data from the NHIA; this was accomplished in 1 day. Taiwan citizens’ household registration system and the foreigners’ entry card allowed the government to track individuals at high risk because of recent travel history in affected areas. Those identified as high risk (under home quarantine) were monitored electronically through their mobile phones. On January 30, the NHIA database was expanded to cover the past 14-day travel history for patients from China, Hong Kong, and Macau. On February 14, the Entry Quarantine System was launched, so travelers can complete the health declaration form by scanning a QR code that leads to an online form, either prior to departure from or upon arrival at a Taiwan airport. A mobile health declaration pass was then sent via SMS to phones using a local telecom operator, which allowed for faster immigration clearance for those with minimal risk. This system was created within a 72-hour period. On February 18, the government announced that all hospitals, clinics, and pharmacies in Taiwan would have access to patients’ travel histories."
I am not surprised by the rapid adoption of masks in Taiwan due to their awareness of the situation in China and prior experience with SARS.
Overall Taiwan did a great job of managing COVID-19, as you have noted a lot of what they did sets an example that other nations could learn from. Unfortunately the response in the USA has been more muddled in many local areas such as New York, New Jersey and Massachusetts.