We mainly specializes in the researching, developing and manufacturing natural halobios biochemical extracted and plants extracted biochemical products. At present,our main products are : Chitosan Series, Glucosamine Series,Chondroitin Sulfate Series,Collagen Series, Hyaluronic Acid Series ,Plant Extract Series etc. We can supply glucosamine series as follows: D-glucosamine sulfate 2KCL D-glucosamine sulfate 2NaCL D-glucosamine HCL N-Acetyl-D-glucosamine Please contact us feel free.