hangzhou greensky biological tech.co.,ltd, a leading manufacturer and supplier of herb active ingredients in china, supply high-quality subjected products with very competitive price and good service. now we are supplying: huperzia serrate extract general information: botanical source: lycopodium serratum part of plant used: whole herb classification: plant / herb extracts extract solvent: water & ethanol appearance: white crystalline powder; odor: characteristic; particle size: 100% pass 80 mesh; bulk density: 45-55g/ml; specifications:huperzin-a 1%,5%,98%.