Heibechems Co. Ltd. is one of the leaders in pharmaceutical grade designer drugs, legal powders, research chemicals in China. We don' t merely sell them, we manufacture them. Since 2008, we have operated a state-of-the-art pharmaceutical manufacturing facility in China. We also run a fully-staffed research and development laboratory where all of our products are created and re-tested to insure purity. We won't offer samples if we weren't totally confident in our products