Check out these automotive parts mold images:
Smart Doll Stand Material
Image by Danny Choo
The fixture in the back is removable but allows a stand to be mounted which allows dynamic poses like this one.
The frame is made from durable Polyoxymethylene – the following blurb about this material copied from WIkipedia.
Typical applications for injection-molded POM include high performance engineering components such as small gear wheels, ball bearings, ski bindings, fasteners, knife handles, lock systems, and model rocket launch buttons. The material is widely used in the automotive and consumer electronics industry. The M-16 rifle’s stock and other parts are made of it.