(4-traders.com) Canberra, Australia, Aug 17, 2017 - (ABN Newswire) - Greatcell Solar Limited (ASX:GSL) (formerly Dyesol Limited) wishes to advise that the closing date for its Share Purchase Plan (SPP) has been extended by one week to Friday, 25 August 2017. The Company announced yesterday the award of a letter of negotiation (LON) for a $6 million Australian...http://www.4-traders.com/GREATCELL-SOLAR-LTD-35928783/news/Greatcell-Solar-Limited-ASX-GSL-Extension-of-Share-Purchase-Plan-24959834/