Semi-worked plastic substances for use in production of protective air-cushions; semi-worked polymer resins for use in production of shock-absorbing polyurethane foams; unsaturated polyester resins, semi-finished in the form of films for use in production of protective air-cushions; unsaturated synthetic polyester resins, semi-finished in the form of films for use in production of protective air-cushions; expanded unsaturated polyester resins, semi-processed; semi-processed synthetic polymer ...