7-Eleven, the world's largest convenience store chain, has appeared in the subway stations of Guangzhou, south China's Guangdong Province, since the city's No. 2 subway line opened last December.

  The US-based 7-Eleven will open shops at all the 16 stations of the line. The store mainly sells daily-use items such as newspapers, batteries, drinks, milk and hamburgers, but will modify its goods and services according to customers' needs and

the number of passengers by the subway.

  The Guangdong Sai Yi Convenience Stores Ltd., a subsidiary of 7-Eleven, has permission to open 350 7-Eleven shops in south China.

  "7-Eleven aims to become the reliable good neighbor of the customers," said Ma Shihao, general manager of the company.

  7-Eleven was set up in America in 1927, with its name deriving from its operating hours of 7 a.m. to 11 p.m. Later the shop extended its business time to 24 hours.

  The chain has set up 23,000 retail shops in 20 countries and regions, serving nearly 30 million people a day.