A large fire at a key South Korean factory is feared to put a dent on the production quantity and schedule of the Galaxy S5. The fire, which lasted six hours and required 300 firefighters to put out, started around 7 AM. The factory, which is located in Anseong, South Korea, is one of Samsung’s main lines for producing the printed circuit boards or PCBs used in the devices. The fire was believed to have originated from the factory’s third floor but the exact cause is still unknown.