中文内容由 Google Cloud Translation 自动生成，仅供参考；请以英文原文为准。问答资料来自欧盟化学品管理局（ECHA）官方网站。
答案（中文）
根据 CLP 归类为危险物质和混合物的供应商必须在将其投放市场之前按照 CLP 进行标记。供应商是将物质单独或以混合物的形式投放市场的任何制造商、进口商、下游用户或分销商。进口被视为投放市场（CLP 第 2(18) 条）。因此，进口商（供应商）进口（投放市场）物质或混合物必须按照 CLP 进行标记。进口的物质和混合物需要进行 CLP 标记，即使进口商和用户是同一法人。如果进口商使用分销商，则进口商不得将此标记义务转嫁给其分销商。供应链中的任何供应商（包括进口商）都应对分销的物质/混合物进行正确的标记。如果满足以下条件（请注意，这些条件可以累积适用），则进口商无需按照 CLP 对其物质/混合物进行分类、通知或标记：物质/混合物处于海关监管之下；没有处理或加工活动；适用以下三个条件之一（不可累计）：物质/混合物（a）处于临时储存状态，或（b）存放于自由区或自由仓库，以备复出口，或（c）处于过境状态。海关术语中，过境指境内过境和境外过境。如有疑问，建议联系海关当局，以明确《欧盟海关法典》第952/2013号条例（欧盟）所规定的适用海关规则。
Answer (EN)
Suppliers of substances and mixtures classified as hazardous according to CLP must label them in accordance with CLP before placing them on the market.
A supplier is any manufacturer, importer, downstream user or distributor placing a substance on the market on its own or in a mixture. Import is considered to be placing on the market (Article 2(18) CLP). Therefore, an importer (supplier) importing (placing on the market) substances or mixtures will have to label them according to CLP. Imported substances and mixtures require CLP labelling, even if the importer and the user are the same legal person.
Where importers make use of a distributor, the importers may not pass this labelling duty to their distributor. The substance/mixture being distributed should be correctly labelled by any supplier (including the importer) in the supply chain.
An importer is not required to classify, notify or label its substances/mixtures in accordance with CLP if the following conditions apply (note that they apply cumulatively):
the substances/mixtures are under customs supervision;
there is no treatment or processing activity;
one of the three following (not cumulative) conditions apply: the substances/mixtures are (a) in temporary storage or, (b) in a free zone or free warehouse with a view to re-exportation or, (c) in transit.
In customs terms, transit means both internal and external transit. In case of doubt, it is recommended to contact the customs authorities, to clarify the applicable customs rules established by Regulation (EU) No 952/2013 on the Union Customs Code.