This is good news for global trader who frequently communicate in Japanese export control matter. Japanese export controlled items are substantially same as EU because JPN is members of international regimes such as NSG, AG, MTCR and Wassenaar Arrangement.
However, the difficulties are in its numbering scheme which is totally different from the rest of the world, and in addition, language barrier always exist.
For example, 5A002.a is defined as 輸出令９項(7) 省令第８条一項九号. In English, it is described as "Export Trade Control Order category 9, (7), Ministerial Ordinance article 8, paragraph (1), item (ix)".
METI announced on Oct 20 that they made up the conversion table of JPN-EU controlled items list in MS-Excel spreadsheet format and disclosed in their web site. It is; http://www.meti.go.jp/policy/anpo/hp/eulist_taihihyo.html
I downloaded and briefly looked through the list. Although it contains more than 2,600 rows, it is simple, concise and easy to use. Looks useful for communicating with counterpart in foreign country because EU list is adopted by Singapore, Hong Kong, and Malaysia etc, and similar to US ECCN. This is good initiative and worth while praising the significant effort by METI.