The concept of cost control based on value chain breaks through the traditional cost control mode of cost control. Based on three cost elements of resource input, resource consumption and time, the concept of three-dimensional cost control is proposed. Cost is the cost of value creation or voluntary consumption. The cost control based on value chain is essentially dual: first, ensure the adequacy of resource input, ensure that the input resources can create value that meets customer requirements; second, control resource consumption, ensure the utilization efficiency of resources, and provide as much customer value as possible.<br>
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