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About product and suppliers:
        Alibaba.com offers 4,436 blue slate products. About 12% of these are slate, 5% are roof tiles, and 4% are granite. 

A wide variety of blue slate options are available to you, such as honed, tumbled, and chiselled. You can also choose from rusty, black, and red. As well as from block, tile, and flag slab. And whether blue slate is synthetic resin, stone, or plastic. 

There are 4,436 blue slate suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of blue slate respectively. 

Blue slate products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 1,102 with ISO9001, 200 with Other, and 52 with ISO14001 certification.