Apis cor had some dealing with Samsung I remember. To me, they felt almost like marketing shop for their partners than a genuine engineering company.

When I voiced something about their engineering during an event, they weren't really able to reply with anything other than recital of their marketing.

IMHO, in its current iteration, 3d printed building are completely nonviable commercially.

The main point of 3d is to expensive, and error prone manual labour with a single pass automated process. 3D printed buildings as of now require more labour, more operations, and more materials than most conventional building techniques.