capital preservation means that no matter how much money you earn, you can at least keep the principal. For example, if you invest 1, yuan and you don't make any money, you must pay back at least 1, yuan. Of course, it is necessary to write a good clause on the investment contract to show that your money can be guaranteed. No matter who invests your money, you can get the principal if you don't follow this clause.

Poly means the same thing. It just means that the money returned to you must be higher than or equal to the interest on the contract. For example, if you invest 1, yuan and the contract says that Poly is 1%, then the money you get back after the investment period is 1,1 yuan. < P > If you don't get at least this money, you can go to them to argue with them for violating the terms of the contract. Hehe < P > I have been selling funds for some time, if that's what you mean.