Main Characteristics: Appearance: White particle Content: ≥500,000 IU/G ( HPLC ) Moisture: ≤5% Particle size: 100% through 20 mesh sieves;85% through 40 mesh sieves Standard: GB9840-2017 Packages:Food grade polyethylene bags, then packed into carton, 25Kgs/Carton Storage and Stability: 24 months of shelf life. Sensitive to oxygen, heat, light and moisture. The product should be contained in unopened original package, protected from light in a dry place at low temperature (≤15℃). Once it is opened, pls use it up in a short time.