PERI DUO

Non-metal construction elements made of plastic, namely, formwork in the nature of scaffolding, supports, wall panels, girders, brackets, structural parts therefor, and non-metal reinforcement materials therefor; non-metal forming systems for concrete and other curable construction materials comprised of non-metal modular casting forms; non-metal construction materials, namely, plastic sheets in the nature of form liners for concrete forms and surfaces for use in construction