BRUSSELS, Dec 8 (Reuters) - Alphabet's Google on Friday criticised a potential order from EU antitrust regulators to sell part of its lucrative adtech business, saying it was disproportionate or not right for its advertising partners.

The comments from Google's director Oliver Bethell and its vice president for global ads Dan Taylor came after the U.S. tech giant responded to EU charges issued to the company in June.

"We are opposed to divestment. We don't think that's the right outcome for this case. We think this is a tremendously efficient part of our business," Bethell told reporters.

(Reporting by Foo Yun Chee, Editing by Louise Heavens)