Number

Qualified according to requirement in standards

The actual level our enterprise has reached

1

Size offset(mm)

Thicknessoffset1.2cm

            1.5cm

            1.8cm

±1.0

±1.2

±1.4

1.2±0.5

1.5—1.8±1

Length offset

±2

1

Width offset

±2

1

Diagonal difference

≤4

2

2

Static bending strength(N/mm2)

Template longitudinal

≥70

75

Template latitudinal

≥50

60

3

Elastic modulus(N/mm2)

Template longitudinal

≥6.5×103

6.5×103

Template latitudinal

≥4.5×103

4.5×103

4

Recovering strength of water boiling, freezing and drying(N/mm2)

Template longitudinal

≥50

53

Template latitudinal

≥35

44

5

Alkali tolerance

No cracks, bubbles, de-lamination

Accord

6

Water content

≤14

8