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"COVID-19 cases are surging and we must take urgent action to flatten the curve now," tweeted Los Angeles mayor Eric Garcetti on Monday.
"By maintaining high-level exchanges and close communication, the two countries will inject new impetus into their cooperation and push their relations to a new level," he said.
"China commits itself to opening up wider and deeper to promote common development across the world," he said.
"China is one of the world's most exciting and dynamic markets, it became our largest market last year," said Randy Tinseth, vice-president of commercial marketing at Boeing.
"China is a huge spirits market, and we just see it quite an opportunity for us," she said.
