Research on supplier’s quality supplying competence under mixed quality characteristics

Based on the research of the supplier’s quality supplying competence and multivariate process capability indices, this paper discusses the question of supplier’s quality supplying competence index of multivariate quality characteristics in mixed specifications, that is the researching of supplier’s quality supplying competence of mixed quality characteristics. At the beginning, it carries out a series of hypotheses, studies it under different situations, and lays special stress on studying it under general situations. At last, this paper studies its validity.