BEIJING, May 22 (Reuters) - China said on Wednesday it

had taken measures against 12 companies involved in the U.S.

military-industrial complex and their senior executives, in

response to the U.S. arming of Taiwan and sanctions on Chinese

companies.

The U.S. companies included units of Lockheed Martin ( LMT )

, Raytheon and General Dynamics ( GD ), China's Foreign

Ministry said.

The measures, which include freezing assets in China and

banning senior executives from entering the country, took effect

from Wednesday, it added.

The action follows U.S. "indiscriminately imposing unlawful

unilateral sanctions on a number of Chinese entities on the

basis of so-called Russia-related factors," the ministry said in

a statement.

China said the U.S. had "ignored its objective and

impartial position in the Ukrainian crisis", and had instead

"engaged in unilateral bullying and economic coercion".

The ministry said the U.S. has also continued to sell

arms to Taiwan, which "seriously violates" the one-China

principle and joint communiqués between both countries, and

"seriously undermines" China's sovereignty and territorial

integrity.