Property and vehicles are the best form of security. This is because they have verifiable valuations and can be registered on the PPSR. Vehicles can be funded to up to 100% of their value and property can generally be funded to 80%. If there is a first mortgage on your property this can still be topped up to 80% but there may be a limit on the amount that can be borrowed.
Plant and equipment can be used as security but the percentage funded will depend on the resale market of the items.
Funding can generally not be provided against general schedules such as office equipment because this cannot be tracked and there is no resale market.