If it's a police tactical unit health product, you can check with the US Food and Drug Administration. There are nationally recognized functions, which are suitable for people to see if they are suitable for you.

Tips: Pay attention to two points in the selection: 1? Look at the brand and choose a big brand, with good quality and good effect; 2 Look at the platform, whether the qualifications are complete, whether there is a traceability mechanism, whether it stands with consumers, and whether it is guaranteed after sale.