By Michael Martina
TAIYUAN, China, Sept 25 (Reuters) - A brawl at a Foxconn factory that disrupted production at Apple's main China supplier for 24 hours highlights regimented dormitory life and thuggish security as major sources of labour tension in China.
While unrest often flares in China as low-paid workers agitate for better pay and conditions, the conflict at Foxconn's Taiyuan facility in northern China was notable for its scale and severity, even if not directly related to shop-floor conditions.
It marked a blow to Apple's top supplier as it ramps up production to meet orders for the iPhone 5 and seeks to rehabilitate its image after a labour audit this year found flaws.
Foxconn does not say which of its plants supply Apple but an employee told Reuters that the Taiyuan plant was among those that assembled and made parts for the iPhone 5. Some workers said they were making the iPhone 4s and some reported an increase in production targets of about 20 percent since June.
Details of the melee remain sketchy as police and company officials investigate, but employees interviewed by Reuters said tension between workers and security guards boiled over on Sunday evening after a worker was severely beaten.
That led to thousands joining the fracas and about 40 people were injured, according to Foxconn and Chinese media, while thousands of police were deployed to quell the unrest.
A 19-year-old worker in hospital with back and hand injuries said he was angered by the rough security guards and a culture of managers cursing workers.
"It doesn't matter who you are, you shouldn't curse people like that," said the worker surnamed Liu. "They do it all the time. If it happens over a long time, it builds up and of course it makes people angry and they go crazy like that."
The movement of workers from other Foxconn plants to Taiyuan may have contributed to friction between groups of labourers facing heavier workloads and crowded dormitories as production intensified to meet Apple targets, rights groups and workers said.
It was quiet on Tuesday outside the factory, with police keeping watch. Gates had been torn off hinges and windows smashed, and a voice on a loop recording broadcast over a loud speaker appealed for people to maintain order.
"There were thousands of bystanders and they just couldn't control it," said a 29-year-old worker who would only give his surname Xiang. "It was just smash and destroy."
Foxconn Technology Group of Taiwan, the trading name of Hon Hai Precision Industry Co, is the world's largest contract maker of electronics for global brands such as Hewlett Packard, Nokia and Dell as well as Apple .
Foxconn said on Tuesday the one-day closure would not disrupt supplies from the factory where 79,000 people work.
The company said the unrest was triggered by a personal dispute that spun out of control, rather than conditions in the factory.
Louis Woo, a Foxconn spokesman, said the security personnel involved were under contract with a third party at a privately managed factory dormitory, adding that their attitude was "not too good".
In the past, security personnel working for Foxconn have been known for bullying and as tough enforcers of efforts to stop theft, including the pilfering of Apple prototypes, with workers being subjected to stringent body searches.
In 2010, guards working for the company roughed up a Reuters journalist outside a factory in Shenzhen.
Several Taiyuan workers said some tension had arisen because of the deployment of workers from other Foxconn plants to bolster manpower in Taiyuan, with friction between workers from different provinces including Henan and Shandong.
"This happens in many companies, especially big ones," Woo said of the movement of workers around the country.
"We have 1.1 million workers in total in China, the advantage is we can mobilise our workers when one business line suddenly needs more people. Relocation happens very often."
Some labour groups say ultimate responsibility for strains rests with Apple, which they say puts profit above workers' welfare despite pledges to cut overtime hours and improve workers' livelihoods.
"The whole Apple production chain has problems," said Li Qiang, with the New York-based China Labor Watch, that has scrutinised Apple and Foxconn for years.
"Its sales and marketing strategy involves launching a product suddenly, without maintaining much inventory ... so the subsequent product shortages help build demand, but also place extreme pressures on workers."
Foxconn has begun a series of reforms after facing accusations of poor conditions and mistreatment of workers.
Li Qiang, the labour activist, said workers at Foxconn's giant plant in Zhengzhou, in Henan province, were largely working on the iPhone 5, and were also facing great pressure, with 70 hours a week common, despite pledges by Apple and Foxconn to cap work at 60 hours.