model is made by the size of the manufacturer;the model is in the center of coordinates;strip path to all textures have been removed;Model tested for the presence of all the textures;plugins are not required;Units used: mm;All objects, textures and materials have their names;a library of materials for VRay and Corona Render included;light in a separate layer;light cloned as an instance;Also prepared are additional suspensions of two types: polished metal, white plastic. The lengths of the suspensions mm 30,60,100,150,200,250,300,350,400