Rectangle roofing slate natural stone, color is black & black-blue, conforms to European standard IBIS EN-12326, American standard, Chinese standard. It is regarded as Top-level and split by hand. For roof construction, roof decoration. Life expectancy of Ziyang slates is above 75 years. Silicon content is 70%, water absorption is 0.4%, A1. Thermal cycle test T1, sulfur diocide exposure result is S1. Our slate performs very well in fireproofing. Without radioactive material content. We also have the wall cladding slates, flooring slates, interior decoration slates, plate slates and slate crafts, and so on. And we provide customization for each customer.
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