| The products are made by soaking the base in bitumen.or thermoplasticity elastomer(such an styrene butadiene styrene--SBS),or thermoplastics(such as atactic Polypropylene---APP,APAO,APL)modified bitumen,then covering double faces with elastomer(SBS)or thermoplastics(APP,APAO,APL)modified bitumen,and last finishing... |