Is Phala on polkadot?

Excuse me, I'm curious to know if the project Phala is indeed integrated with the Polkadot blockchain network? As Polkadot aims to facilitate interoperability and scalability, I'm wondering if Phala, with its focus on privacy-preserving smart contracts, has taken advantage of Polkadot's capabilities to offer its unique services. Could you please clarify if there's an official partnership or integration between these two platforms?