BRIEF-Shenzhen Neptunus Bioengineering to raise up to 3 bln yuan in private placement

March 31 (Reuters) - Shenzhen Neptunus Bioengineering Co Ltd * Says plans private placement of shares to raise up to 3 billion yuan ($483.87 million) * Says shares have resumed trade on March 31 Source text in Chinese: http://bit.ly/1DiQeOh; http://bit.ly/1yuEIcI Further company coverage: ($1 = 6.2000 Chinese yuan renminbi) (Reporting by Hong Kong and Singapore newsrooms)