Chemical Resistant ASA Synthetic Resin Roof Tile Fertilizer Plant Roof for Blending Hall Cover A fertilizer blending hall carries ammonia and salt dust in the air, and a roof above the mixers that corrodes or chalks fails long before its stated service life. Product name HENCING ASA synthetic resin tile Product color Brick Red, Purplish Red, Dark Green,Bule,Grey Length Customized Product thickness 2.5mm/2.8mm/3.0mm Product hight 30mm Pitch distance 160mm Efficiency 960mm