BRIEF-Tong Oil Tools To Boost U.S. Unit's Capital By $12 Million
May 21 (Reuters) - Tong Oil Tools Co Ltd:
* SAYS IT PLANS TO BOOST U.S. UNIT TONG PETROTECH INC'S CAPITAL BY $12 MILLION Source text in Chinese: https://bit.ly/2kdM1HB Further company coverage: (Reporting by Hong Kong newsroom)