Glass bubble diameter is within a few microns to a few millimeters diameter range of glass spheres, there are solid, hollow, porous glass beads of the points, with good optical performance, a spherical lens characteristics, strong shock resistance, rolling resistance, thermal conductivity low, light, etc., have been widely used in urban traffic signs, car brands, retroreflective screen, injection technique, filling materials, insulation materials. Glass bubble as a new filler...
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