there are a lot of options but let's go in order.
first point, essential not optional, an adequate diet.
without this there is no product that makes you lose weight.
Steroids, being androgenic, obviously affect fat mass and lean mass, however if we are only talking about weight loss and "burning" fat, there are much better options.
some products/tips to consider, besides steroids:
In general, drugs with adrenergic activity, selective agonist of ?2-adrenergic receptors such as the famous and abused clenbuterol.
yohimbe (affects alpha receptors, very present in stubborn brown fat)
HGH FRAG (176-191) 12 times more potent, in terms of fat loss, than HGH
ephedrine
or even ECA stack
SARMs such as GW (cardarine) and S4
thyroid steroids T3 - T4
As you can see there are many options but more information about you is needed to go further.
Finally, not for having to sell you anything, but I have never heard of the site you mentioned
check out this approved and trusted source
http://puritysourcelabs.ru/