Grating plate biasanya memiliki permukaan bergerigi atau bertalang untuk meningkatkan daya cengkram dan mengurangi risiko selip.industri2034@ gmail.com   _ _ _ _ _ _ _ GLASSWOOL  SURABAYA Glasswool or fibreglass insulation is manufactured from melted glass spun into a flexible mat or fine fibres. Usually bought to the industry in batts or blanket