坚持招投标制 ,分层次保证物资供应。招投标的目的是保证质量 ,降低造价 ,为发挥批量集中采购的优势 ,对材料设备进行统一采购调拨很有必要 ,但如果将螺丝、垫片、钉子之类的东西也实行统购 ,物资供应部门工作难度很大 ,无法保证按时到货 ,也影响施工单位工程进度。因此 ,物资 Adhere to the bidding system to ensure material supply at different levels. The purpose of tendering and bidding is to ensure quality and reduce the cost. In order to make use of the advantages of bulk centralized procurement, it is necessary to conduct unified purchase and transfer of materials and equipment, but if the screws, gaskets, nails and other things are also purchased, the material supply department The work is very difficult, it can not guarantee the arrival of goods on time, but also affect the progress of construction units. Therefore, supplies