强化税收征管 防止税款流失 　　近年来随着各种经营形式的大量涌现，一部分经营者在利益的驱动下，想方设法逃避纳税义务。这些不法经营者往往具有四个特点，即“生产不固定、营业不正常、管理不规范、销售不开票”。这样一来，导致税务部门无法正确了解税源，致使户源失控、 Strengthen Tax Collection and Prevention to Prevent Tax Loss In recent years, with the massive emergence of various business forms, some operators, under the drive of interest, find ways to evade their tax obligations. These unscrupulous operators tend to have four characteristics, namely “production is not fixed, business is not normal, management is not standardized, sales are not invoiced.” As a result, leading to the tax department can not correctly understand the tax sources, resulting in control of households out of control,