Source: https://brussels.icbc.com.cn/SiteCollectionDocuments/ICBC/Resources/ICBC/%E6%B5%B7%E5%A4%96%E5%88%86%E8%A1%8C/%E5%B8%83%E9%B2%81%E5%A1%9E%E5%B0%94/%E4%B8%8B%E8%BD%BD/2012/EPOAFINALVERSION.pdf