Ordered one of this from the 1800 watts series in 2018 December , it was listed on amazon as a "Power Supply, 1800W Switching Power Supply 90% High Efficiency for Ethereum S9 S7 L3 Rig Mining 180-240V"
The only reason i ordered a no name psu for my rigs , bc i ran out from my spare/backup psu's , and i had to get one asap. (Im Using only evga 1600T2 for all my Builds) , around this time evga 1600t2 psu's was hard to get , and they price hoovered around 6-800$,
so i decided to give a chance to this Chinese made psu .
This psu is running without any issues in the past over 3 years now , its not in a ac cooled mining facility , its in my home built mining shed , with filtered outside air circulation , hot humid summer , where temp is over 39C s , mid winter temp never going under 0 Celsius.
I have zero issues with this psu as of now , after over a 3 years of 24/7 usage .