1. Bond funds are generally divided into class A, class B, class C and other subdivision share categories. Class A expense structure is the most common expense model. In addition to management fees and custody fees, fund companies also charge subscription fees and redemption fees at one time. Category B or C no longer collects subscription fees and redemption fees separately, but deducts the corresponding sales service fees from the fund assets at a fixed annual rate, which is the same as money market funds. Take Huaan Enhanced Income Bond Fund as an example. Class A charges subscription fees and redemption fees, while Class B charges sales service fees, and does not pay subscription fees and redemption fees. At the same time, due to the influence of the amount of subscription and redemption funds and the daily sales service fee, the effective funds actually operated by the two levels of funds are different, which will lead to differences in the net rate of return per unit share, but the gap is not large.

Judging from the current classification of bond funds, the long-term income of B or C (0) bond funds that charge sales service fees is slightly lower than that of A fund, but this does not mean that the actual investment return of choosing A fund exceeds that of B or C.

2. Retain the original charging mode of continuing sales fee: that is, accrue the continuing sales fee without charging the subscription fee, which is called Class C. The new charging mode of subscription fee: charge the front-end subscription fee, excluding the continuing sales fee, which is called Class A. The management fee and custody fee of the two types of fund shares are the same: management fee is 0.6%, and custody fee is 0.2%. Set corresponding fund codes for the two types of fund shares, and publish the net value of fund shares respectively (the net value of exchange is revealed as the net value of class C fund shares). Investors can choose C-type charging mode or A-type charging mode independently when purchasing. Important note: Class C and Class A fund shares * * * are bound by the Fund's fund contract, enjoy relevant rights and undertake relevant obligations. Any reference to the fund or fund share in the fund contract and relevant legal documents includes Class C and Class A fund shares.

Therefore, for investors with a small amount of funds and an investment period of less than two years, Class B charging mode is undoubtedly a better choice, which can avoid the cost of capital entry and exit and improve the return on investment; For investors with large amount of funds and long holding time, it is more appropriate to adopt Class A charging mode.