SK Hynix Inc., the world’s second-largest maker of computer-memory chips, suspended operations at a factory in China after a fire.

The company is ascertaining if there are any casualties and investigating the cause of the fire, which occurred at a plant in Wuxi, China, Son Hee Young, a spokesman of Icheon, South Korea-based SK Hynix, said in an telephone interview. The fire, which started at 3:50 p.m. local time during deployment of equipment, was extinguished by 5:20 p.m., the company said in a statement today.

The factory makes dynamic random-access memory chips for mobile phones and personal computers.

SK Hynix, which supplies chips to global smartphone manufacturers including Apple Inc., said in July there was limited second-half supply growth for memory chips. Lower-end smartphones will drive demand for dynamic random-access memory, or DRAM, chips in the second half, it had said.

Hynix shares rose 0.7 percent to 28,650 won at the close in Seoul. The stock has gained 11 percent this year, compared with a 3.2 percent decline in the benchmark Kospi index.