The natural hirudin contained in hirudin is recognized in the world and is the strongest natural antithrombin substance so far! Yunnan Hairuidi Bio-pharmaceutical Co., Ltd. is the only enterprise in China that intensively cultivates hirudin with high density, and it is also the only enterprise in China that has mastered the world-class hirudin extraction technology. Choosing leech leech freeze-dried powder is the best choice to treat thrombotic diseases.