natural colour sand

Colored sand is divided into natural sand, permanent staining sand, temporary staining sand.
nbsp; Permanent staining sand: Brightly colored, acid and alkali resistance, UV, do not fade.
nbsp; Natural sand: From natural ore crushing, does not fade but has more impurities.
nbsp; Temporary staining sand: Brightly colored ,easy bleaching

Character:non-toxic,tasteless,pollution-free,resistant to corrosion,Resistance to insolate,invariant color,resistant to acid-base.
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