According to the Standard International Trade Classification ( SITC), the industry is gathering of those products that the first three digitals are the same according to SITC, i.e. they at least belong to the same division 、 chapter and group. 按照联合国国际贸易商品标准分类(SITC)理解,产业是这样一些产品的集合:它们是按照SITC至少前三位数相同的产品,即至少属于同类、同章、同组的产品。
Then based on some sorting methods, such as Standard International Trade Classification, the Export-Oriented Industry is divided into several parts. 在此基础上,依照产品贸易分类方法,将外向型产业分为零次产业和高次产业。