AAA certification is a kind of “credit rating” and a very important certification in the field of corporate credit standardization. The credit rating of corporate credit assessment in C adopts the internationally accepted “four-level nine-grade system” rating level, which is divided into: AAA, AA, A, BBB, BB, B, CCC, CC, C. 3A certification is the highest level certification, indicating that the company is in good operating condition, has great development potential, strong profitability, and has a strong ability to fulfill specific contracts or commitments.