Zhongyu ZY250 chain and sprocket?

Hi, considering buying a Zhongyu ZY250, but it looks to need a new Chain (and so probably a new sprocket) I can't find one specifically made for this model bit is there one that would work?

Perhaps the Yamaha 250 as this is what it it a replica of?

Any information on this bike would be appreciated.

I am aware that parts are hard to come by for these imported models, the impression I got was that when it breaks it's gone, not designed to be repaired, but cheap and not a lot of work to be done before then, but would this extend to the chain and sprocket? That seems extreme

You can work it out if you have access to a JT Sprocket Book . You could do it online but it might take longer . Ask a proper motorcycle shop to help out . You will need to remove the sprockets and get hold of a steel rule . You will also need to know what pitch the chain is . Hopefully it's stamped on the links . I've spent many a happy afternoon doing this back when I worked in a bike shop and I was usually successful.