... .90% kernel content: 0.4% Moisture content: 8.7%3 [Filter] walnut shellAppearance:shiny ,beautiful, brown. High-quality fruit (coconut, apricot ... so on.Uses: It is used for oil field, refining, environmental protection, chemical industry wastewater treatment and so on.Physical and chemical ... parts, electronic parts, etc. Walnut shell used as polishing material for water treatment