Star rating chart for supplier evaluation and grading. According to the relevant query information and data on rating levels, the best visual chart should be the star rating chart. The star rating chart is essentially a column chart filled with five-pointed stars, making it more intuitive to see the rating. The supplier evaluation standards are graded into three levels: A, B, and C. The enterprise is legal and can provide valid qualification certificates. The product quality is long-term and stable without any failure. It has established a complete quality management system and has been effective.