... , non-polluting, easy to use, 3 inexpensive and safe Garnet Abrasive1.pore-forming materials] walnut shell particlesOur factory using foreign ... content: 8.7%3 [Filter] walnut shellAppearance:shiny ,beautiful, brown. High-quality fruit (coconut, apricot) shell as raw materials, it is refined ... process of spectecles, jewelry, button, stamping parts, electronic parts, etc. High quality garnet Abrasive