... grade E glass.Thickness: 0.5,0.8, 1, 1.5, 2, 3,4,..., mm.Specification: 1020*2020mm ... sports is allowed.2.2 Main performance index Table 1 : Performance index Sr.PerformanceUnitTest methodIndex value1Vertical layer direction bending ... strengthMPaGB/T5130 section 5.1≥ 502Parallel layer direction compact ...