Plastic Prototype by SLA or CNC 1.Material:ABS,PP,PE,TPR,TPE,Silicone,Foam etc 2.Finish:painting,texture etc ... SLA,when surface finish and overall appearance straight from the machine is the most important factor in the prototype. Stereolithography models ... :Metal:Stainless Steel,Brass,Aluminium,Steel,Carbon Steel.Plastic:ABS,PP,PC,PU,PVC,POM,PMMA,Nylon.Rubber,Silicone,elastomers etc ...