LED upstream key material PSS is in short supply with demands unable to be met. With supply unable to meet demands from LED manufacturers last year, production capacity is lacking by 50 percent, according to Economic Daily News. This had lead to a rise in price of around 5 percent for sapphire ingot, polished wafers, and PSS in March. Manufacturers including Crystalwise, Ridgetech, Aceplux Optotech, and Crystal Applied Technology are anticipated to benefit. PSS industry insiders are optimistic towards March operations.