Perlite, Expanded Perlite, Horticultural Perlite Particle Size: 1-3mm 2-4mm 3-6mm 4-8mm. etc Applications: Gardening, Horticultural, Agriculture cutting seedling, Soilless Cultivation, Soil Improvement, Hydroponics, Green Plant landscaping, Insulation, etc. Contact us to buy bulk quantity. Our factory located in Xinyang city, Henan province.We have the advantage to give you the best quality Expanded and Unexpanded perlite. We have a variety specifications for our products, you can customized the granularity according to your need.