NOVELTY - Composite molded body comprises assembly of at least two or three layers including a first layer, which has more than 50 wt.% of polymethyl methacrylate or a polymethyl methacrylate-containing polymer mixture, a second layer, which is a layer made of polycarbonate or a polyester and located on one side of the first layer, and an optional third layer, which is a layer of a fluoropolymer, polycarbonate or polyester and located on the other side of the first layer. The second layer has a reflective coating, which is on the opposite side of the first layer.    USE - The composite molded body is useful: for concentrating solar radiation in durable solar reflectors; for application of a metal decor design for decorative purposes; as a reflecting surface for the automobile and electrical appliances or as traffic mirrors in road traffic management systems (all claimed).    ADVANTAGE - The composite molded body: decreases the solar reflectance of durable solar reflectors by not greater than 8%, preferably only up to 3% within 10 years (claimed); has adhesion-promoting layer, which ensures a lastingly bonding coatability of the reflective coating; and exhibits extended service life.    DETAILED DESCRIPTION - Composite molded body comprises assembly of at least two or three layers including a first layer, which has more than 50 wt.% of polymethyl methacrylate or a polymethyl methacrylate-containing polymer mixture, a second layer, which is a layer made of polycarbonate or a polyester and located on one side of the first layer, and an optional third layer, which is a layer of a fluoropolymer, polycarbonate or polyester and located on the other side of the first layer. The second layer has a reflective coating, which is on the opposite side of the first layer, and has been applied by physical vapor deposition (PVD) or chemical vapor deposition (CVD) process on the composite molded body. An INDEPENDENT CLAIM is also included for producing a composite molded body comprising producing the first layer by extrusion, coextrusion, adhesive-free lamination or extrusion coating and the first layer is connected with the second and optional third layer, and applying reflective coating by PVD or CVD process subsequently to the second layer.