What to do in this situation in stock (apwr)?

in 9,29,20 A-Power Energy Generation Systems, Ltd Announces EPC Contract with Baishan Long Run Water Conservancy Development Co., Ltd. for USD $279 million. should buy the stock after hours or wait for tomorrow to buy it. the Market Cap: 343.85M, 52wk Range: 5.72 - 21.04, After Hours: 8.20 Up 0.70 (9.23%) 4:42PM EDT