Quoted from Chicoman:
Rumor has it that JJP playfields are made in China from what I've heard recently although they do use Microplayfields too. Maybe their CE models use Microplayfields and then China for the other models.
I think it has got to the point where customers are going to want to know where/who they get their playfields done before they purchase. And Stern and JJP will likely need disclose that information proactively.