Powder: Yes Certification: GMP, ISO 9001, USP, BP State: Solid Assay: 99% Devery Time: 5-7working Days Door to Door Payment Method: Western Union, Money Gram Specification: GMP Purity: >99% Product Level: Medical/Pharmaceutical Level Shipment: TNT EMS, DHL ;FedEx Transport Package: Aluminum Foil Bag Origin: China Appearance: yellow or almost yellow crystalline powder