Specifications: Length 1000mm+-5mm Width 330mm+-5mm Appears externally the length 142mm+-5mm Each square meter institute The products are made by soaking the base in bitumen, or thermoplas ticityelastomer(such as styrene butadiene-SBS),or thermoplastics(such as atactic polypropylene-APP,APAO,APAL)modified bitumen,the covering double faces with elastomer(SBS) or thermoplastics(APP,APAO,APAL) ...