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Hello,My name is Wenjie Luo and I work for a medical device company in New York, USA. We are interested in getting a sample of your chitosan polymer. If the product suits our needs we may want to order on the scale of metric tons in the next few years. We want a polymer that is water-insoluble, DDA95, and has a relatively high molecular weight. Please let me know if you can prepare a sample for us. Thanks!