Purity: 99.8 Appearance: white crystal Package: 1kg/ Aluminum foil bag Application: Research purpose ProductionCapacity: 500 Kilogram/Month Storage: Kept in a cool, dry and ventilated place We guarantee good quality. 100% refunded if parcel is not delivered or poor quality. TEL：18721298197 QQ：38817599 Skype：hxjxhg E-mail：fchemical@foxmail.com