In order to prevent counterfeit goods from entering the market, Dutch wild crucian carp fishery medicine printed anti-counterfeiting QR code on genuine packaging bags. Buyers can scan the QR code and enter the official Dutch website to confirm the purchased products. Fake and shoddy products don't have this QR code.

Dutch wild crucian carp fishery medicine has a string of anti-counterfeiting verification code in the upper right corner of the inside of the packaging bag. Search official website, the Netherlands, and enter this verification code to check the authenticity of the product. Fake and shoddy products have no verification code.