High Quality:
The absorption is very good:0.18%.
acid resistance, abrasion resistance and modulus of rupture are very good. If we can reach an aggrement,we can show you our test reports.
This slate is good quality that passed GB/T 18600-2009, ASTM, BS EN 12326-1-2004. It has following characters
--smooth surface
--nice color
--non-fading
--durable. Our absorption is 0.18%, much lower than GB/T R1 grade 0.25% and ASTM 0.25%. Abrasion resistance is 0.016mm that is much lower than GB/T 0.35mm and ASTM 0.38mm.

Size:
Mackerel scale;
Pentagon;
Tectangle;
425:400mmx250mm
420:400mmx200mm
430:400mmx300mm
specifications that we export most are above.
630:600mmx300mm
520:500mmx200mm
330:300mmx300mm
320:300mmx200mm
Thickness:
4-9mm