应急采购的生产急需物资，按4.2.1条款执行。
For emergency purchase of urgent materials, follow Clause 4.2.1.
从应急物资储备角度研究，按照应急物资生产、采购、储存的特性，构建应急物资储备分类体系。
The classification system of emergency materials was built, referring features in material production, procurement and storage, from the perspective of materials reserve in this paper.
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