BEIJING, April 12 (Xinhua) -- Chinese Premier Li Keqiang and Singapore Prime Minister Lee Hsien Loong on Friday respectively sent congratulatory letters to the China-Singapore Suzhou Industrial Park on its 25th anniversary.

The Suzhou Industrial Park has introduced and absorbed international advanced technology and management experiences, implemented innovation-driven strategy and achieved a leap forward in development. It has played an important role in promoting mutually beneficial cooperation between China and Singapore, Li said in the letter.

The park should further optimize its business environment, do a greater job in advancing international economic and technical cooperation, continuously enhance its scientific and technological innovation capability to build a first class high-tech industrial park, Li said.

Singaporean Prime Minister Lee Hsien Loong said in the letter that the successful development of the Suzhou Industrial Park reflected close cooperation between China and Singapore at all levels, and he hoped the park would continue to play a pioneering role in promoting bilateral cooperation.