Perlite
    Perlite is a volcanic debris encountered the acidic lava lakes, marine after a sharp cooling after a vitrified form of volcanic rock, which formed in the late Jurassic to the Cretaceous period, which is some 100 million 5 3 1000 millions of years. According to the internal crystalline water content in different areas into obsidian, perlite
Perlite is to smash the magmatic rocks heated to 1000 ° C to form the above expansion, with a closed porous structure, Particle diameter is generally 0.5 ~ 2.5mm between. Light, good ventilation, no nutritional elements. Easy to use in the mixed culture floating on the surface of soil
Perlite the main chemical components:

SiO2	CaO	Al2O3	Na2O	Fe2O3	K2O
70-75 %	0.1-2.0 %	12-16 %	1.0-5.0 %	0.1-1.5 %	1.0-5.0 %

    Major uses expanded perlite:
    1. Construction areas : thermal insulation, fire retardant paint, sound-absorbing panels, and so on
    2. Industrial fields :Pipe insulation, cold insulation insulation, filtration materials, the process of steelmaking slag build sets, rubber plastic filling material
    3. Agriculture horticultural areas : soilless cultivation, soil improvement, pesticides ease amid antiseptic