We would like to offer: Natural Rubber. Consist of: SIR (Standard International Rubber) 10 (field coagulum), SIR 20, RSS (Rubber Smoke Sheet) and Latex. Packing in bales, crates or shrink-wrapped pallets. Standard SIR 20 : dirt content (% max.) = 0.20 (w/w); ash content (% max) = 1.00 (w/w); volatile matter (% max) = 0.80 (w/w); PRI (min.) = 50; nitrogen (% max) = 0.60 (w/w). For any interested parties, pls kindly contact for further details. Thank you. Cas no.: 9006-04-6.