Two types of new plastic trims have been developed. One is the composite trim of stainless steel foil, ABS and flexible PVC. New concept solves the problems of galvanic corrosion, noise and reduces cost and weight, keeping the advantages of metal such as brightness, small shrinkage, high rigidity and longer durability. The other is new type of CAB - Aluminum foil trim. The improvement of technology consisted of material improvement by Bayer A.G.; designing, adhesives and process have solved the problems increasing its durability several times longer. For these developments, new testing methods contributed to reproduce actual deterioration in short periods.