FAP, June 20 (FAP)-- yesterday evening, four A-share express companies, including Shentong Express, Yuantong Express, Shun Feng Holdings and Yunda shares, released their operating data in May, with year-on-year growth in business volume and business income. The industry believes that supported by favorable policies such as expanding domestic demand, the express industry has played a smooth role in opening up production and marketing channels and connecting both ends of supply and demand, the market scale has been further expanded, the service quality has been improved, and the development of the industry has continued to improve.