Rectangle stretched installation (with special hooks)

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Based on rectangle fitting (with special hooks)

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Variable rectangular installation (with nails)

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Symmetric installation (with special mounts)

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There are also many other types of installation. As for not providing full Front water insulation facade therefore shale can be used in a variety of ways. Top shows techniques that are more economical because they have minimal overlap.
The thickest shale slab reinforcement used for tiling:

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Rather the slate has a variety of colors and they never fade or disappear, then often of different colors are designed to shape, texture, or pattern:

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