Invoicing and financial aspects of the business knowledge to understand

         Recently due to the need to work, we need to know Invoicing business, as well as some knowledge of the financial aspects of the business needs to have a good ability to grasp, do better, come on reading, learning, oh, and also integrate theory with practice to understand,

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Reproduced in: https: //www.cnblogs.com/kevinGao/archive/2012/05/25/2524542.html