Hebei Constant Wit Biotech Co.£¬Ltd is a professional distributor and exporter of pharmaceutical intermediates and chemicals, which is independent from a well-known biotech enterprise, and is the distributor of many manufacturers. Our main products including: UR-144, 5FUR-144, MAM2201, AM2201,AKB48, 5FAKB48, Methylone, 6-APB, MDPV etc.