“Ordering illegal drugs from China is as easy as typing on a keyboard. On guidechem.com, more than 150 Chinese companies sell alpha-PVP, also known as flakka, a dangerous stimulant that is illegal in the United States but not in China, and was blamed for 18 recent deaths in one Florida county.”
Source: In China, Illegal Drugs Are Sold Online in an Unbridled Market – The New York Times