Product description: There are three different color range for our C9 product, light color, normal color and dark color. Light color 3-5# is used for hot melt pressure Sensitive Adhesive, solvent pressure Sensitive Adhesive, hot melt binder.Normal color 8-12# is used for paint, ink, hot melt pressure Sensitive Adhesive, solvent pressure Sensitive Adhesive.Dark color 17-18# is used for paint, ink, waterproof material.