... is a versatile and high-performance new lightweight material developed in recent years. It will be the new composite mainstream materials ... is 0.20-0.60g/cm3 with 2-120μm in diameter. It owns features with light weight, large bulky, low ... , smoothly mobility. It can be used in paint and coatings, rubber, plastics, glass, steel, artificial stone, putty and other products as filler ...