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"We should push for the construction of a peaceful, secure, open and cooperative cyberspace, and explore ways to build multilateral, transparent and inclusive international trade rules in digital sectors," he added.

He said other countries like Japan had also begun mining combustible ice, but operations were suspended due to a significant amount of sand entering the production wells.

Established in 1991, the GEF trust fund aims to help tackle pressing environmental problems and has launched 790 investment projects and programs in 120 countries.

The suspects are accused in more than 50 cases involving over 6 million yuan (892,000 U.S. dollars).

"If the United States were to liberalize its export barriers against China to the same level as those applicable to Brazil or France, the U.S. trade deficit with China would narrow by up to 24 percent and 34 percent respectively," Chinese Vice Premier Wang Yang quoted an article published by the Carnegie Endowment for International Peace when delivering a speech at a China-U.S. business luncheon on Tuesday in Washington.