Purity - Hey guys some help on china white plz?

[Absu]

Swim was just wondering, if swim isnt mistaken, black tar is the extraction they get from opium gum and then theres other processes to make it more pure, and making it white china?

How can swim make china white from black tar? And if its not possible,(for an amateur at least or maybe ppl who know how to dont just give the recipe away) how could swim make black tar into a more powdery&pure form? Like to snort...
Swim isnt talking in like just a consumer "oh just deal with what you can get" way, but also as a knowledge base swim would like to have a little more information on this procedure and forms of heroin... I hope swiy can help swim out with this since theres only black tar around here... pure one, tho.