60I证书是向法院申请子女抚养令的前置门槛。本文说明五种证书的区别、哪些情形可获豁免、2025年新条例带来的变化,以及当找不到另一方家长时该怎么办。A practical guide to section 60I certificates: the five categories, the exceptions, what changed under the 2025 Regulations, and what to do when the other parent cannot be found.