Impact strength: 7-8 Tensile strength: 37 Elongation at break: 15 L value: 28.8 Monthly production capacity: 200 tons Fire protection grade: 2.0 V1 It can be used for fireproof power supply casings, etc. ???度7-8 拉伸?度37 ?裂伸?率15 L值28.8 月?能200吨 2.0 V1防火度 防火?源?等