... : 8.7%3 [Filter] walnut shellAppearance:shiny ,beautiful, brown. High-quality fruit (coconut, apricot) shell as raw materials, it is refined ... used for oil field, refining, environmental protection, chemical industry wastewater treatment and so on.Physical and chemical performance indexWeight: 1250kg ... of spectecles, jewelry, button, stamping parts, electronic parts, etc. High quality garnet Abrasive