大凡一个家庭、一个企业，都离不开物资采购，少则几元，多则上万元、几十万元、几百万元，甚至上亿无尤其是大型钢铁、家电、汽车生产等联合企业，一年的物资采购资金就多达几十亿元，甚至上百亿元。这么庞大的资金支出，不知企业是否都真正建立了相应的管理和监督制约机制？? In general, a family and a company are inseparable from the procurement of materials, ranging from a few yuan to more than ten thousand yuan, hundreds of thousands of yuan, several million yuan, and even billions of dollars, especially large-scale steel, household appliances, automobile production, etc. Enterprises, one year of material procurement funds up to several billion yuan, or even billions of dollars. With such a huge amount of capital expenditure, do you not know whether companies have actually established corresponding management and supervisory control mechanisms? ?