Complex sentence: The initial phase of network started on August 5th 2002, which implemented, literally, "Three statute for online government and local government executive procedure" on June 7th 2003, and full operation on August 25th 2003.
Split into simpler sentences: The initial phase of network started on August 5th 2002. Enactment of, literally, "Three statute for online government and local government executive procedure" on June 7th 2003, and full operation on August 25th 2003.