this grinding polishing machine mod: gnp 60 is manufactured by the latest advanced technology and it can have up to 20 heads. the first 3-5 heads fitted with diamond discs are fixed as stationary heads, while the others equipped with frankfurt holder discs are mounted on mobile bridge which allow these heads to moving themselves up and down trough all the tile surface in order to achieving a better polishing surface. it has a production capacity of about 1200 m2/ 8 h shift on size 33x33 cm