求翻译：该产品的可持续性体现在本节电系统的成本较低，可广泛生产并推广，并且该系统是基于已经被广泛使用的考勤机而开发研制的是什么意思？

The product is reflected in the sustainability of low-cost energy-saving system can be widely produced and promoted, and the system is based has been widely used and developed by Attendance

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This product sustainable manifests in this electricity saving system cost is low, but widely produces and promotes, and this system was based on the checking attendance machine which widely used is already developed the development

The sustainability of product embodied in this energy-saving system of the low cost of a wide range of production and promotion, and the system is based on the attendance has been widely used for the development of

The cost that the sustainability of this product embodies in system of originally economizing on electricity is relatively low, can produce extensively and popularize, and this system is based on and has already developed by the attendance machine used extensively