1. WW Grade Gum Rosin 2. Color: light yellow 3. Standard: GB/ ... 4. Free Sample 5. Competitive price Product Name: Gum Rosin WW GradeType:Synthetic Fibers, Synthetic Resin and Pla...Grade:X ... , WW, WG, N, M,KSpecification: Standard: GB/T 8145/8146-2003SpecificationsItemXWWWGNMKColorslightly ... about 225kg/drum,18MT in the 20'FCL Gum Rosin WW Grade