1) Heat insulation, fireproof2) Index of refraction: 1.30 - 1.503) Used for swimming pool, park, alcove, metope, doorcase, pole, gardening potted plant, screen 4) Colors: red, pea red, sky blue, bijou blue, cyanine, green, pea green, yellow,black, brown, purple, clarity 5) Sizes: 0.8 - 1.5, 1.5 - 3, 3 - 6, 6 - 9, 9 - 12mm 6) Types: scree species, bomeol species, cover sand species, multicolor species, glazing species Solid circle craft glass beads: 1) Extensively used for the adornment of craft gift, vogue adornment, Christmas thing and dress, hand bag2) Sizes: 0.2 - 0.4, 0.4 - 0.6, 0.6 - 0.8 - 3.8, 3.8 - 4.0mm 3) Types: reality color up, gold plating sliver and dye glass beads, clarity solidcircle