Shein and Temu, two popular Chinese cross-border e-commerce platforms, have announced that they will raise prices for US consumers starting next week, a move that comes amid tariff hikes by the Trump administration.

In a notice published on its official website, Shein told customers that "price adjustments" will go into effect on April 25. The company said recent changes in global trade rules and tariffs have caused its operational expenses to go up, making the price increases necessary.

Temu, which is owned by Chinese online discounter PDD Holdings, said in a nearly identical notice that it will make price adjustments starting late next week.

"Until April 25, prices will stay the same, so you can shop now at today's rates," Temu said. "We've stocked up and stand ready to make sure your orders arrive smoothly during this time."

These announcements came after the US government decided to eliminate the duty-free de minimis treatment for low-value imports from China, starting on May 2.

Moreover, parcels valued at or under $800 from China to the US will face 120 percent tariffs or $100 per item from May 2 to June 1, and then $200 per item beginning June 1.

Shein and Temu have gained popularity among US consumers as they offer a wide selection of merchandise at competitive prices. Most of the products are shipped directly from factories or warehouses in China.