Ltd too.The research results can be taken as direct guidance for development of supplier quality control of Zhongtie Co.Ltd., and can also be referenced by other same companies.

• 本文的研究结果对于中铁公司的供应商质量控制具有直接的指导作用,对于其他同类型的企业的供应商质量管理具有一定的参考价值。