VB以图表形式分析产品价格，其实是显示价格走势，以图表的方式更能清淅的显示价格趋势，每一种商品对应不同的价格走势，Vb编程者，可以此为参考-VB in chart form of product prices, in fact, is to show prices to graphically display price trends more clear mission, each corresponding to a different kind of commodity price mov