17 Chemical fiber threads and yarns not for textile use; synthetic fibers, namely, plastic fibers, not for textile use; polyimide chemical fiber threads and yarns not for textile use; sheet-like chemical fiber materials, namely, threads and yarn, not for textile use; sheet-like synthetic fiber materials, namely, threads and yarns, not for textile use; sheet-like polyimide fiber materials, namely, plastic fibers, not for textile use; chemical fiber yarns and threads not for textile use; synthetic chemical fiber yarns and threads not for textile use; Polyimide chemical fiber yarns and threads not for textile use; semi-worked synthetic plastics and synthetic resins as semi-finished products in form of pellets, rods, foils, foams, fibers, films and sheets; plastic laminated sheets and panels for manufacture of vessels and their structural parts, aircraft and their structural parts, automobiles and their structural parts, two-wheeled motor vehicles, bicycles and their structural parts, railway rolling stock and their structural parts, space equipment and their structural parts, military equipment and their structural parts; plastic semi-worked products reinforced with fibers in form of pellets, rods, foils, foams, fibers, films and sheets; plastic semi-worked products reinforced with chemical fibers in form of pellets, rods, foils, foams, fibers, films and sheets; plastic semi-worked products reinforced with synthetic fibers in form of pellets, rods, foils, foams, fibers, films and sheets; plastic semi-worked products reinforced with polyimide fibers in form of pellets, rods, foils, foams, fibers, films and sheets; Prepregs, namely, semi-processed resins; prepreg materials made of chemical fibers, namely, plastic composite material in the form of profiles, boards, sheets, blocks, rods, powder and pellets for use in manufacturing; prepreg materials made of synthetic fibers, namely, plastic composite material in the form of profiles, boards, sheets, blocks, rods, powder and pellets for use in manufacturing; prepreg materials made of polyimide fibers, namely, plastic composite material in the form of profiles, boards, sheets, blocks, rods, powder and pellets for use in manufacturing