** Shares of Temu parent PDD Holdings PDD.O drop more than 6% to $91.40 premarket
** U.S. government to curb the entry of low-value shipments under the $800 "de minimis" threshold, which has been exploited by Chinese e-commerce firms such as Shein and Temu
** Shein and Temu biggest beneficiaries of the provision by shipping directly to U.S. consumers from China
** U.S. retailers such as Amazon and Walmart also use the provision
** As of Thursday's close, PDD stock down more than 33% YTD
(Reporting by Savyata Mishra in Bengaluru)