Perlite Division. Perlite is a product made from natural rock named pearlstone. The
material rock is crushed, heated and expanded to form porous particles, which are useful for many purposes. The
material has been used as a fire-resistant and heat-insulating wall
material, detergent and oil absorber, soil improvement
material for horticulture, and filter medium, and has helped preserve a sound living and natural environment. As a
material derived from nature, perlite is an environmentally...
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