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granite circle paving
- Sep 30, 2017 -
It restores metal oxides to the original metal components and creates a protective barrier to prevent the rust from appearing again. Discoloration of stone, mainly in the chemical stability of the stone varieties, the discussion here is not exposed to ultraviolet radiation in the place, stone dry hanging technology light-colored stone color. Typical case is the rice white stone (travertine) in the installation process will appear stone wall from top to bottom gradually turn yellow, over time, the whole wall completely turn yellow. Travertine itself chemical stability is poor, the air of carbon dioxide, sulfur dioxide, nitrogen oxides will react with calcium oxide in central lime.