koutingchem.com is the real website. The site comes up in chinese, but click the english version. This site is the legit one.

Koutingchina.com AKA Koutingchem.lookchem.com AKA other websites they create are fraudulent sites that are likely using koutingchem.com as an outlet to sell products by trying to portray that they are koutingchem.com. Stay away from Amy, Kane, Koutingchina, lookchem.com and Koutingchem.lookchem.com.