What we learned making a plastic injection mold with a Chinese mold maker
They made a custom mold?  At their volumes?  Are they insane?They could have powder 3D printed this stuff for a very long time given the NRE on that complex of a mold.If they needed to control costs, they could have negotiated with a case supplier:
https://www.takachi-enclosure.com/Only after they were shipping enough product to make it worthwhile (100K+ units), should they even think about making a mold.