... anti-resistence ,, anti-erosion,, anti-mildew,,anti-weathering polymer PP AND PE membrane specification: 200g/m2-1200g/m2 size: breath 1200 ... 1998 "life tap water to lose match water equipment and shielding material safety evaluation standard "the standard request ... ,the anti-corrosive characteristic ,flexibility goods ,easy curving ,and odes not break off .anti-pulls with anti-perforation performace ...