Guizhou RedStar Developing's (SHA:600367) stock fluctuated by more than 20% on June 3 and 4, according to a Friday filing with the Shanghai bourse.
The software company did not disclose a reason for the surge, but comes after another surge was announced on May 29.
Its price-to-earnings ratio surged to 156.99, higher than the static ratio of 29.85 and the rolling ratio of 26.93 for the chemical raw materials and chemical products manufacturing industry, stipulated by the country's securities regulator.
Shares closed 5% higher on Friday.