Temu and Shein combined ship around 9,000 tons of cargo worldwide every day, or approximately 88 Boeing 777 freighters filled to the brim, according to February research from Cargo Facts Consulting.

NEW YORK -- Increasing air cargo prices from China to the U.S. are bucking the global trend, as Chinese e-commerce retailers like Shein and Temu that offer fast delivery times spur demand in ...