Sell Roofing slate with BS680

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slates were extracted from sedimentary rock from 300 to 400 million years old Silurian Slate Deposits. They are acknowledged as one of the finest quality slates in the world that conform to BS680(1971) and ASTM C406 S1 standards
1. square with cut angleA
2. rectangle with circle-gothic shape and 2 cut anglesA
3. rectangle with curve-horizontal and vertical
4. rectangleA
5. six-edge shapeA
6. square classicA
7. square with curveA
we produce all range of roofing slate with size from 12" to 24"