La matière utilisée pour ce démonstrateur GEM est un PS recyclé noir, un grade d'injection aux caractéristiques suivantes :  MFI 6-7g/10min, Izod entaillé grade 6-8 kJ/m².

Characteristics:
-Ignition Resistant - UL94 "V0" rated.
-Excellent Flow Properties
-Free of DBDPO, PBDE & TBBA, complies with RoHS directive of EU

Polystyrene is a polymer from the styrenics family that offers excellent transparency coupled with a very competitive cost. It has medium mechanical properties making PS rigid and brittle.

Polyvinyl chloride or PVC is a plastic material obtained by polymerization of vinyl chloride monomer. It is an amorphous polymer with very low crystallinity.

Polyethylene is a low cost standard plastic. There are several types: HDPE (High Density Polyethylene), LDPE (Low Density Polyethylene) and copolymers such as LLDPE.