The problem existing in the credit system of Nanning sugar industry is the grade reduction. The credit rating of Nanning sugar industry was lowered from AA- to A+, and the rating outlook was adjusted to negative. Dongfang Jincheng announced that the credit rating of Nanning Sugar Industry was lowered from AA- to A+, the rating outlook was adjusted to negative, and the credit ratings of "17 Nantang Debt" and "17 Nantang 02" were lowered from AA- to A+.