Mr. Cheng

Pebbles, colored cobblestones, garden pavement paving, pebbles, pure white pebbles
Pebbles and gravel are essential cushion filter materials in various filters. Our factory produces natural pebbles (elliptical and variegated) and Machined pebbles (nearly spherical, pinkish white) are hard, compressive and wear-resistant, and are the best material for filter cushions. The density is .ton/Mohs hardness. Hydrochloric acid soluble rate.%.