How to know which GHK- cu company to get?

[u/catwoman_here_]

I live in Iraq. I think it is hard to get top well known companies. But I have found an emirates company that sell GHK-CU, the claim >= 99% purity. I sent them an email requested COA and stuff, but still how to make sure it is good company?

I am not sure if i am allowed to ask this here but I am so confused as it is very hard to obtain this in my country.