Obsidian by expansion into a lightweight, multi-functional new materials. With the surface density of light, low thermal conductivity, chemical stability, wide temperature range, moisture absorption capacity is small, and non-toxic, odorless, fire, acoustic and other characteristics, widely used in many industrial sectors. Branch may play expansive :70-75 obsidian density kg / cubic meter. Main purpose: the construction industry: concrete aggregate; light, insulation, acoustic insulation panels; fire roof and light frost, earthquake, fire, radiation and other high-rise building wall filler, mortar and other construction materials; a variety of industrial equipment, pipe insulation; a variety of deep cold, the cold storage of the wall; low boiling point liquid, gas storage and transportation of the wall and other wall. Filter aids and fillers: making molecular sieves, filters, detergent; used for wine, making juice, beverage, syrup, sugar, vinegar, food processing and manufacturing filtration of fine particles, algae, bacteria, etc.; purification of various liquids: purified water can reach the degree of harm to humans and animals; chemical industrial plastics, paint industry, detoxification, purification of waste oil, oil dewaxing and fractionation methane, hydrocarbons; as enamel paint, enamel, plastic, resin and rubber industry, filling materials; chemical reaction the catalyst, and the oil filling mixture. Agriculture and Forestry Gardening: Soil transformation, regulation of soil compaction, preventing lodging of crops, fertilizer and fertility control, as well as pesticides and herbicides diluent and carrier. Machinery, metallurgy, electricity, water, light industry: for all kinds of insulation, thermal insulation glass, mineral wool, ceramic art products ingredients. Other: delicate items and packaging materials, contaminated items, precious stones, color stone, glass products, abrasives, explosives density regulator, sewage treatment.