... 30% deposity in advance,70% balance against the copy of B/Ltechnical dateail1,Measurement Deviation:length ... 9%7,Breaking Strength(978.4N)When the thinckness is≥7.5 mm mm,the average shall be ≥ 600N8,Modulus ... anti heat shock test10,Resistance to pollution:The five grade11,Resistance to surface abrasion:Without ... any flaw and peel of the glaze through the anti glaze flaw test12,Resistance to ...