Beijing – A labour watch group says thousands of workers at a Chinese factory that makes Apple’s iPhones have gone on strike over increased quality control demands and having to work during an extended national holiday. New York-based China Labor Watch says several iPhone 5 production lines at Foxconn’s Zhengzhou factory are paralysed after 3 000 to 4 000 workers went on strike after finding the new demands difficult to meet. They’re also angry they were being forced to work during the Golden Week holiday. Taiwan-based Foxconn Technology Group manufactures iPhones in China. The iPhone 5 debuted in September. China Labor Watch says workers beat quality control inspectors, who also carried out a work stoppage after management ignored their complaints. Last month, a brawl involving 2 000 workers broke out at Foxconn’s factory in China’s Taiyuan city.