Wholesale Solid Glass Microspheres High-Hardness Uniform Particle Size Road Reflective Marking Raw Beads

· Solid, transparent, perfectly spherical particles: Formed via high-temperature atomization, the vast majority of particles are standard spheres; broken fragments have been removed through screening. They are colorless and transparent throughout, offering excellent clarity.

· Strict particle size grading and high uniformity: Subjected to multiple rounds of vibratory screening to remove broken beads, dust, and oversized impurities, ensuring consistent particle size within each batch.

· Two distinct categories—Peening Grade and Road-Reflective Grade: The Peening Grade emphasizes particle integrity, while the Reflective Grade features strictly controlled refractive indices to meet night-time visibility requirements for road markings.

· High chemical purity with minimal impurities: Made from soda-lime glass with negligible heavy metal content (such as iron); occasional tiny black specks are normal residue from raw materials and do not constitute a quality defect.

· Stable optical refractive index (Reflective Grade): The refractive index of these road-grade microbeads is precisely controlled to ensure strong reflectivity under vehicle headlights at night.

· Moderate hardness (Mohs 4.5–5.0): Softer than corundum or garnet abrasives, making them suitable for precision workpieces where excessive surface cutting must be avoided.

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