But in January, the company raised its own prices by around 5% to 6% to reflect extra costs. "We have no choice," he said.

--Stella Yifan Xie and David Harrison contributed to this article.

Write to Tom Fairless at tom.fairless@wsj.com, Alistair MacDonald at alistair.macdonald@wsj.com and Jesse Newman at jesse.newman@wsj.com

(END) Dow Jones Newswires

06-07-21 1624ET