Sn types

[odazai]

Hi guys I need helpppp

In the website for buying sn there were different types
Synthesis
Extra Pure
Which one is better?
I don't understand

(I bought the Synthesis one last week but today I found the extra pure but both are 99 percent purity but what are the difference? Should I buy the other one as well )

 

[ToTheTwillight]

Based on English terms, I would say Extra Pure is probably more what you want than Synthesis. But this is as best of information I can give without having any more details than this

 

[odazai]

Based on English terms, I would say Extra Pure is probably more what you want than Synthesis. But this is as best of information I can give without having any more details than this

I think that way too but I asked the guide in the site that I bought he said what I got is better quality but doesn't make sense so I was wondering what's the meaning of this grades name from professional perspective