The device I want to install Nexus onto is the Onda VI10 tablet.
I found some Nexus factory images here, and I would like to install them. Is this possible?
Short answer: no.
Long answer: Nexus factory images, as so kindly implied by their name, are complete snapshots of the software installed on a Nexus device prior to leaving the factory.
Due to the device-specific nature of Android, e.g. it needs specific drivers for it to run on any one given device, it is generally impossible (or illogical, as it seems) to run a build of Android for a specific device on another device.