There is a price gap between nattokinase and Tmall purchased by Noguchi Medical Research Institute of Japan, which may be due to the following reasons:

1. The price difference is caused by different sales channels and discount strategies. Some purchasing agents may obtain products through more direct channels, thus obtaining lower prices.

In addition, the packaging specifications of products may also be one of the reasons for the price difference. For example, some purchasing agents may provide products with different specifications, such as smaller or larger packages, thus affecting the price.

3. In addition, market supply and demand, exchange rate fluctuations and other factors may also lead to price differences.

It should be noted that consumers should choose reliable channels to ensure the quality and authenticity of products when purchasing purchasing products. In addition, consumers should carefully compare the prices and ingredients of different products to choose the product that suits them best.