How long can I sign the fee in advance after the supplementary materials for Australia 143 visa?

10 days. After Australia 143 visa supplementary materials, the official information and visa materials are complete, and it can be pre-signed and paid in about 10 working days. The Commonwealth of Australia, referred to as "Australia" for short, has a territory area of 7.692 million square kilometers, located between the South Pacific Ocean and the Indian Ocean, and is surrounded by the sea. It is the only country in the world whose territory covers the whole continent and is called "Australia".