一般来说,物资的进、销、存应该是进大于销,留有库存,或进销相等,库存为零.然而由于种种原因,我们常常遇到销大于进、库存为负的情况.导致这种情况的原因大致有三种:1.由于物资本身的特点而出现负库存.例如,水泥具有易受潮变质、储存期短、超期降低标号的特点,所以,在经营水泥时,要尽力做 In general, the input, sales, and storage of goods should be greater than the sales, inventory, or the same sales, inventory is zero. However, due to various reasons, we often encounter the situation that the sales are greater than in, inventory is negative. There are three main reasons for this situation: 1. Negative inventory due to the characteristics of the asset capital. For example, cement has the characteristics of easy deterioration by moisture, short storage period, and reduced labeling over time. Therefore, when operating cement, it is necessary to do its best.