May 23 (Reuters) - Applied Materials ( AMAT ) received a

subpoena from the U.S. Department of Commerce's Bureau of

Industry and Security (BIS) in May, requesting information

relating to certain China customer shipments, it disclosed in a

filing on Thursday.

The semiconductor equipment supplier was subpoenaed by the

U.S. Securities and Exchange Commission in February.

Applied Materials ( AMAT ), which supplies chipmaking tools to

Samsung Electronics ( SSNLF ) and Taiwan Semiconductor

Manufacturing Co ( TSM ), reported that 43% of its total

revenue came from China in the second quarter.