Ps sheet are made of polystyrene ,also called Gpps . features : high transparency ,good light transmission ,a variety of colors normal specification : width 1200mm*length 1830mm,width 1200mm*length *2440mm,the thickness: minimum 1.1mm ,maximum 12mm ,color: red ,yellow , blue ,green , black ,smok ,tea ,brown ,grey , milk white .orange .etc. ps sheet