We focused on tetrodotoxin production, and faciliate its application.Our tetrodotoxin is extracted from pufferfish in large scale, and purified close to 100%, by HPLC and capillary electrophoresis.Now, our capacity is 200gram one year, and support and joint with some institute and pharm-lab in application research.As Sodium ion block, tetrodotoxin is a potencial ingredient to study. We welcome your cooperation.