Appearance: Off-White Powder Source: Chitin Standard: USP29Packing: 25KG/Cardboard Drum Storage: Preserve in tight container Validity: Two years Series: 1. D-glucosamine sulfate 2KCL 2. D-glucosamine sulfate 2NaCL 3. D-glucosamine Hydrochloride(HCl) 4. N-Acetyl-D-glucosamine We can manufacture different content of glucosamine and the products can comply with customers' special specifications. Further details, contact us please.