The Poly Real Estate Group, China's second largest property developer by market value, said Sunday its contracted sales volume in January-to-April period totaled 12.22 billion yuan (1.79 billion U.S. dollars), up 16.21 percent year on year.

The increase was generated on the back of the 1.5 million square meters of floor space sold, a 21.26-percent increase from the same period last year, said the company in a statement filed to the Shanghai Stock Exchange.

The company's contracted sales volume in April stood at 4.09 billion yuan, and the transaction area was 496,900 square meters, according to the statement.