N/a manufacturer / supplier in China, offering Hydrophonic Grow Trays Rock Wool Manufacturers Indoor Plants Seeds Stonewool Grow Cubes, Leca Clay Hydro Clay Pebbles Hydroponic Expanded Rocks Clay Pebbles Hydroponic Leca Lightweight Expanded Aggregate Pellet Balls, Agriculture Perlite Horticulture Plant Perlite Building Materials Large Size Expanded Orchid Perlite and so on.