Seller origin was from Singapore, product was from HK. Its trusted ?
do you mean pangolinminer.com ?
I have purchased over 10000 USD in gear from them.
they should be good for you.
they have a telegram site if you go to the website you can look for telegram link and ask what used miners they have.
https://pangolinminer.com/this should get you into telegram
https://telegram.me/PangolinMinerOfficialI post on the channel at times.