Changning Youyou Bio-tech Co. Ltd. is based in China and lists active pharmaceutical ingredients on Global Trade Plaza. The company offers Lappaconitine Hydrobromide, specified at 96% purity by HPLC/titration and extracted from the root of Aconitum sinomontanum Nakai. It also supplies Galanthamine Hydrobromide, described by the supplier as a reversible acetylcholinesterase inhibitor and allosteric modulator at nicotinic cholinergic receptor sites. Buyers can send an enquiry through Global Trade Plaza.