Star chart of supplier evaluation and rating. According to the relevant information, there are data about the rating scale, and the best visual acuity chart should be the star rating scale. Star chart is essentially a column chart, filled with five-pointed stars, and the evaluation level can be seen more intuitively. The supplier evaluation criteria are divided into three levels: A, B and C. The enterprise is legal, can provide valid qualification certificates, and the product quality is stable for a long time without unqualified products. Established a perfect and effective quality management system.