What mod is this again?
Do you realize that the boards are manufactured in Illinois, some chips are manufactured in Texas. And a few components are manufactured in China. And it is assembled in Ohio. So a large part is mostly made in the US.
Brandon (of Evolv) had a bit of trouble in one visit to China. As they asked him why he was there. And he said to sell US electronics to China. And they said, oh you mean to buy Chinese electronics for the US. He said no, he really means selling US electronics to China.
I have had tons of Chinese mods that still work that are over 4 years old now. I only had 2 I think failed. One was a Vamo clone and the brass 510 threads wore out in 30 days. And one Smok board lost its boost regulation. The vendor replaced it with a M65 v2 which hardly nobody knows about and still works even today.
The problem of course with those Chinese boards are that TC is horrible and wattage regulation is iffy at best. And since their efficiency is so low, battery life sucks! Who could live with that? I definitely can't. As I know their are boards that can do so much better than that.
Why PWM? They pulse when you fire them. And makes that rattlesnake sound. And your vape is uneven and you can tell the wattage is jumping up and down. Gosh I hated those mods. Luckily they are rare today.