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"This agreement will remove the unnecessary duplication of evaluation and certification activities for aeronautical products by the civil aviation authorities, and therefore reduce costs for the aviation sector. The agreement will also promote cooperation between the EU and China towards a high level of civil aviation safety and environmental compatibility," it said.

In his opening address, Tria said trade between Italy and China has been following a constant upward trend in recent years.

He reiterated that China will continue to be a builder of world peace, a contributor to global development and a defender of the international order, and push forward the construction of a new type of international relations and a community with a shared future for mankind.

Against the backdrop of a slowdown in the world economy and trade, Xi said, the Chinese economy got off to a good start in 2019 as key indicators were kept in a reasonable range.

"The two agreements ... are highly professional and reflect the broadness and depth of the two sides' cooperation. Both China and the EU stand for multilateralism and want to build an open world. Strengthening cooperation in the field of civil aviation is a strong example of walking the talk," Ambassador Zhang Ming, head of the Chinese Mission to the EU who also attended the ceremony, said in a statement.