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Hollow Glass Microspheres H20. Ultra-lightweight Material: True density ranges from 0.18 to 0.60 g/cm3 with particle sizes from 2 to 150 microns. Versatile Applications: Ideal for coatings, plastics, FRP, oil drilling, cement slurry, and deep-sea buoyancy. Excellent Chemical Resistance: Properties resemble soda-lime borosilicate glass for stable performance in various environments. Long-term Flow Stability: Remains free-flowing for at least six months from shipment date when stored properly. High Flotation Efficiency: Typical floaters reach 96% by bulk volume for effective separation and processing. ISO 9001 Certified: Manufactured under ISO 9001 certification ensuring consistent quality and environmental protection.