The recent tariff cut has offered a window of opportunity for them to ramp up shipments from China and restock their warehouses and fulfill existing orders.

The earlier 120% tariff rate on small packages from China valued under $800 will be lowered, the White House said Monday.

The Chinese government has leverage over the two firms. Although Temu has grown quickly, PDD, its parent company, remains heavily dependent on its Chinese business, Pinduoduo. Shein does not sell its wares in the country, but it does rely on Chinese tech talent for its algorithm.