Our customers also need sometimes to get parts as close as possible of series parts in terms of manufacturing process, accuracy, processed material, material orientation inside the structure of parts etc… Therefore we propose them to realize functional prototypes, called Proto B, that are very representative of series parts because they are molded with good material and via representative injection systems. In addition, these prototype parts are almost as accurate as the series ones since they are manufactured from tools made of steel which are corrected in the same way as series tools.