Tom Grater International Film ReporterIMAX China has issued a profit warning to the Hong Kong stock exchange with the company having taken a beating from the COVID-19 shutdown this year.The large-format exhibitor said it was forecasting a net loss of $34M-36M for the six months to Jun 30, 2020, in contrast with a net profit of $24M for the same period in 2019.The contributing factors will be no surprise to anyone – the operator was forced to shutdown all of its 700 IMAX theaters in China from