将物质通报至分类和标签清单时收到的通报编号是否需要通过供应链（SDS、标签等）进行传达？

将物质通报至分类和标签清单时收到的通报编号是否需要通过供应链（SDS、标签等）进行传达？

Does the notification number received when a substance is notified to the Classification and Labelling Inventory need to be communicated through the supply chain (SDS, label, etc.)?

否。制造商或进口商没有义务告知下游用户其已向C&L清单提交通知。此外，下游用户无需获得上游供应商确认物质已向C&L清单提交通知即可继续在其产品中使用这些物质。与REACH预注册编号类似，C&L通知编号仅供进口商/制造商内部使用，作为通知的收据/证明。无需将其告知最终用户/分销商。根据CLP第18条，通知编号不能被视为标识符，并且它不是C&L清单中公布的清单参考编号。

No, manufacturers or importers do not have the obligation to inform downstream users that they have submitted a notification to the C&L Inventory. Furthermore, there is no need for downstream users to receive confirmation from upstream suppliers that substances have been notified to the C&L Inventory in order to continue the use of the substances in their own products. Similar to the REACH pre-registration number, the C&L notification number is for internal use for the importer/manufacturer as receipt/proof of notification. It does not need to be communicated to the DU/distributor.   A notification number cannot be considered as an identifier according to Article 18 CLP and it is not the inventory reference number published in the C&L Inventory.