Qingdao sales stained colored sand

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

  Colored sand through the selection-processing, including any dye, non-toxic, tasteless, non-pollution, the corrosion resistance, to bear the acid and alkali, to resist violence exposes to the sun, not change color and so on  characteristics. It is persistent pollution for the Family, the House's decorative colors.