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"Cat owners love it. It's like a new toy," read a comment by buyer Xuelimama. "With the self-cleaning machine, I don't have to worry about the smell of my pet when I come back from business trips."

"But now we have been learning advanced technologies from foreign countries, digesting and absorbing, and eventually developed our own innovations over the past years, finally laying a technological basis for an engineering prototype," Sun said.

"China and the United States are the world's leading innovators, which have (a) strong mutual and beneficial relationship," he said.

"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 is a hugely important market for our pork exports and it is vital that we maintain our strong relationship with buyers and continue to fly the flag for our red meat, especially as we are on the cusp of shipping beef to China for the first time in over 20 years," Stewart said.