3M玻璃泡是工程中空玻璃微球，可替代传统填料和添加剂，如二氧化硅，碳酸钙，滑石，粘土等，适用于许多苛刻的应用。 这些低密度颗粒广泛用于各种行业，以减轻部件重量，降低成本并提高产品性能。3M Glass Bubbles are engineered hollow glass microspheres that are alternatives to conventional fillers and additives such as silicas, calcium carbonate, talc, clay, etc., for many demanding applications. These low-density particles are used in a wide range of industries to reduce part weight, lower costs and enhance product properties.