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Product: Slate  Price: Bargain  Delivery Period: Shipped within days from the date of payment of the buyers. Last Updated: 09 Aug,2012   Valid Until： Long-term effective

Slate is an argilaceous schist with a fine, hard grain all of whose elements are orientated in a plane called the "fissility plane". This peculiarity permits: The slate to be split, i.e. to be divided into thin sheets or thicker slabs, along the virtu