The planned tariff has caused disquiet among trading partners and at a forum last month, China's top climate envoy Xie Zhenhua urged countries not to resort to unilateral measures such as the EU levy. The bloc will not begin collecting any CO2 emission charges at the border until 2026. Importers will from 2026 need to purchase certificates to cover these CO2 emissions to put foreign producers on a level footing with EU industries that must buy permits from the EU carbon market when they pollute. Companies in the European Union, Britain and Ukraine have told Reuters they expect little initial impact during the trial phase. Among Europe's significant trade partners, China's foreign ministry, Turkey's trade ministry and a U.S. official declined to comment on the launch.

---

Persons: Xie Zhenhua, Paolo Gentiloni, Gentiloni, Philip Blenkinsop, Kate Abnett, Valerie Volcovici, Nevzat, David Stanway, Barbara Lewis Organizations: European Union, Companies, Reuters, European Commission, World Trade Organization, U.S, Thomson Locations: BRUSSELS, Britain, Ukraine, Europe, Washington, Ankara, Beijing