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Best Buy opened at 5 am, employing workers in orange vests to direct traffic. Others offered temperature checks and "grab-and-go" merchandise, including toys, bicycles and kitchen appliances to discourage crowding in store aisles.

Biden has adamantly denied any wrongdoing, accusing, instead, Trump of "abuse of power."

Besides, SZSE also participates in transformation and renovation of the technological system in Dhaka Stock Exchange of Bangladesh (DSE) after it led a Chinese consortium to take a strategic stake in DSE last year.

Besides the AT200, SF Express said it also tested an amphibious drone in July, which can carry up to 250 kilograms of cargo with a cruising speed of 170 kilometers.

Biden has also said he would eliminate incumbent President Donald Trump's restrictions on remittances and travel to Cuba.