What should I be asking my gear/pharmaceutical sources?

[ShortRomus]

title, I know I should ask for COAs and reshipping/refund policies, am I forgetting anything else?

 

[user20266741]

Batchnumber to match the COA's batchnumber. And a picture of whatever youre trying to buy next to a paper with your name written on it(also run it trough an ai tester)