... of chitosan,is made in the reaction of chitin and chloride acetic acid in alkalinity circumstance.Carboxymethyl Chitosan,compared ... more advantages in the field of health-protecting,industry and agriculture,etc.And now Carboxymethyl Chitosan has been applied in the ... ,susrained release dosage of the medicine , accelerate plant growth , and clean dirty water , etc. As the medicine protecting health, ...