@acala-network/contractspackage and import them into your project. The package includes the smart contracts to import into the smart contracts of your project as well as their compiled versions in order to import them into the deploy, test and interaction scripts.
@acala-network/contractsdependency contains the
ADDRESSutility which can be used in your smart contracts as well as scripts to access the predeployed smart contracts. It allows for using the addresses of the predeployed smart contracts without the need to copy-paste and hardcode these addresses into your project.