UN comtrade database

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为什么从UN comtrade database 中查询两国之间的出口时，查了A国到B国的出口，然后再次查了B国从A国的进口，怎么统计数据不同呢？

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关键词：un comtrade comtrade database Trade Base database

看来你是新手，请问，如果一样：你怎么处理关税、和运费呢？

为什么我在UNcomtrade统计的某行业产品出口值与中国发布的数据差了几倍？我是按照HS编码各类产品加总得到的总额是中国发布的总额3倍多。

名一文 发表于 2015-3-16 08:08
看来你是新手，请问，如果一样：你怎么处理关税、和运费呢？

所以应该如何解决这个问题捏？

因为 到岸价....和 离岸价的差异

别乱说，好好看看文献怎么讲的。

wuyue1234 发表于 2017-4-9 10:17
别乱说，好好看看文献怎么讲的。

First, as import values are reported CIF (cost, insurance and freight) while exports are reported FOB (free on board), CIF costs are estimated and removed from imports values to compute FOB import values.Second, the reliability of country reporting is assessed based on the reporting distances among partners. These reporting qualities are used as weights in the reconciliation of each bilateral trade flow twice reported.

Taking advantage of this double information on each flow, we end up with a large coverage of countries not reporting at a given level of the product classification.

Ther dataset gives information about the value of trade (v, in thousands of US dollars) and the quantity (q, in tons). Individual trade flows are identified by the exporter (i), the importer (j), the product category (hs6) and the year (t). BACI is available with versions 1992, 1996, 2002 and 2007 of the Harmonized System (HS) with 6-digit disaggregation

First, as import values are reported CIF (cost, insurance and freight) while exports are reported FOB (free on board), CIF costs are estimated and removed from imports values to compute FOB import values.Second, the reliability of country reporting is assessed based on the reporting distances among partners. These reporting qualities are used as weights in the reconciliation of each bilateral trade flow twice reported.

Taking advantage of this double information on each flow, we end up with a large coverage of countries not reporting at a given level of the product classification.

Ther dataset gives information about the value of trade (v, in thousands of US dollars) and the quantity (q, in tons). Individual trade flows are identified by the exporter (i), the importer (j), the product category (hs6) and the year (t). BACI is available with versions 1992, 1996, 2002 and 2007 of the Harmonized System (HS) with 6-digit disaggregation