Task: Translation
Input (Czech): Zp sob povrchov ho o et°en  alespo  jedn    sti v²robku, obsahuj c ho alespo  jeden povrch v podstat  tvo°en² plastickou hmotou, zahrnuj c  alespo  jeden sulfona n  stupe  a alespo  jeden stupe  neutralizace, p°i em  neutralizace se prov d  uveden m do styku s alespo  jednou polyaminoslou eninou.\
Output (English): In the present invention there is disclosed a process for the surface treatment of at least one portion of a product having at least one surface essentially composed of plastic. The process comprising at least one sulfonation stage and at least one neutralization stage is characterized in that the neutralization is carried out by bringing the product into contact with at least one polyamine compound.