Fucoidan made by Kimuraya, a marine product extracted and refined from 100% Okinawa mozuku, is a high molecular weight mozuku fucoidan with an average molecular weight of 300,000 levels. Fucoidan is a component contained in the seaweed slime and originally exists in a high molecular weight state. Our idea is that it is better to retain its molecular structure as much as possible. The patents that Kimuraya Co., Ltd. has obtained for fucoidan have been based on the research results of this highpolymer mozuku fucoidan.