Ug's from china are no different then pharm grade for building muscle and strength. SORRY guys, this is simply a myth and it is the same as saying alcohol from mexico doesn't get you drunk, alcohol is alcohol and testosterone is testosterone. Is pharm grade cleaner? YES but I have never noticed any difference in that regard either.
Look it is this simple I have built my 20 inch arms, 30 inch thighs, 500lb bench and have been sub 5% bodyfat on ugl from China.