Is the 0 APR for apple products always when purchasing apple products? Or is it only when you first open a credit card account?

I was planning on utilizing the 0 apr for a silicon mac in the future but I definitely need a laptop now since my current one is struggling. I was planning on using the 0 APR on one now and then using it again for the silicon mac in the future. Does anyone know if its 0 apr (after approval) on all apple products whenever you purchase them? Or is it like you buy one apple product and thats it for the 0 APR, the rest is regular apr if you get another product. I'm not sure if im wording it correctly but hopefully the question makes sense.