The expanded perlite is acidic volcanic glassy lava (Perlite) by crushing, screening, to a certain size, then the warm-up, instant high-temperature calcination and made a white or light-colored high-quality insulation materials. The particles within the honeycomb structure, non-toxic, odorless, does not rot, non-combustible, acid and alkali. Different performance of the products and can be made with a different adhesive, which is characterized by light weight, good thermal insulation and sound-absorbing performance and abundant raw materials, low prices, use of safe, convenient construction, can be widely used in petroleum, chemical, power, construction , and metallurgical industries. Used in agriculture, gardens on fertilizer, water, sterile, good air permeability.