Slate Tile - Mackerel Scale 425x400mm, High Quality Ad Black | Smooth Surface, Non-fading, High Absorption 0.18%

These Slate Tiles are available with following features :
Color : AD black
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
Output:
Output is 300,000 square meter high-quality roofing slate and 100,000 square meter floor slate every year. We plan to take over concession of 10 quarries and expand processing capacity at the same time so that the annual output of high-quality slate can reach 1000,000 square meter in order to meet the needs of international and domestic clients.