SHARES of Qingdao-based Sailun made trading debut on the Shanghai Stock Exchange on June 30, bringing the number of listed companies in the Qingdao development zone to five.

    The private company develops, manufactures and sells radial tires.

    At present, there are more than 30 companies in the zone, including 10 key companies in the city. More companies in the zone are expected to list shares in the next three years.

    (Wang Yuanyuan, Han Guangliang)