Slight nuance - they have spent a [reasonable amount of money] automating production.
The trick to automating something that ‘isn’t a car’ is often to put in small bits of low-cost and flexible automation that can be moved around and repurposed. IMO this is often what we are bad at in the west - companies can/do setup massive automated sites at huge expense, but there aren’t the skills/infrastructure to do this at the lower end of production (eg if you want to deploy one AMR in the west the AMR companies don’t want to talk to you, and there isn’t really an easy way to get one yourself without talking to an integrator which will charge tens of thousands which will wipe out the benefit, and we don’t have the skills within most small production companies to get a small robot arm/AMR working without external integrators - but a one-AMR deployment might be a more common scenario in China).