Order qty is bigger, the procurement cost and delivery charge are lower.
订购数量较大，采购成本和交货费较低。
Planning and procurement budget, control purchasing cost;
规划采购预算，控制采购成本；
Its overall structure is simple, reliable and safe and needs lower procurement and operation cost.
其整体结构简单可靠安全、购置及使用成本均低。
Its overall structure is simple, reliable and safe and needs lower procurement and operation cost.
其整体结构简单可靠安全、购置及使用成本均低。
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