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。
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。
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。
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