信函中列出的入围理由相当广泛。ECHA能否向注册人提供更详细的信息，说明该物质入围的原因（例如，使用的QSAR工具、哪个外部清单等）？

信函中列出的入围理由相当广泛。ECHA能否向注册人提供更详细的信息，说明该物质入围的原因（例如，使用的QSAR工具、哪个外部清单等）？

In the letters, the reason for shortlisting is quite wide. Could ECHA give more detailed information to the registrant on why the substance was selected for the shortlist (e.g. QSAR tool used, which external list etc.)?

ECHA 竭尽全力在信函中包含尽可能多的信息。然而，由于信函数量众多且内容复杂，ECHA 无法在通报信函中列出所有促成入围的技术信息，例如特定外部清单中与注册档案中的成分、杂质或添加剂匹配的条目。更多详细信息请参阅每年更新的定义文件：http://echa.europa.eu/screening。如果您收到指向外部来源或 QSAR 的信函，建议您查阅该文件。

ECHA makes every effort to include as much information as possible in the letters. However, due to the high number of letters and complexity, ECHA is not in the position to list all technical information that led to shortlisting in the communication letters, such as the entry in the particular external list that was matched against a constituent, impurity or additive in the registration dossier. Further details are provided in the definition document updated annually at: http://echa.europa.eu/screening. ­It is advisable to consult this document if you have received a letter pointing to an external source or QSARs.­