"I'll remind TikTok's president to respect the integrality of our rules, which are very protective of our citizens, and the obligations they'll have, including on the transparency of their algorithms," Breton said in a joint press conference with Spain's Economy Minister Nadia Calvino.

TikTok's Chief Executive Shou Zi Chew is due to travel to Brussels to meet with top EU officials later this week.

(Reporting by David Latona; Editing by Inti Landauro)