There are dozens of manufacturers in the global sapphire manufacturing market, but only tier one manufacturers are capable of supplying good quality sapphire ingots including Kyocera, Namiki, Monocrystal, DK AZTEC, USIO, Harbin Aurora Optoelectronics and Silan Opto. Leading sapphire manufacturers have launched production expansion plans to meet LED and non-LED market demands. LEDinside had an opportunity to interview Monocrystal Marketing Director Ludmila Zubova at TILS 2015 last week.