... and commercial company. Test Remark water absorptionCode A1forst resistancePASSED 100times of cycling testthermal shock resistance Code T1Features and specifications: edge chipped ... ,8-10,9-12,12-15 and upshapeany shape,i.e.,rectangle,pentagon,scalloped shape etcholewith drilled hole,w/o holeNatural roofing ...