Tender For "rust converter confirming to is 13515-1992, it should be in single pack system of organic base. the solvent base should be a blend of liquid isocyanate per-polymer with reducing agent. packing o f 20 ltrs. in cans. sample should be approved before bulk supply. accepted make: chemtex/protodin d r31. [ warranty period: 30 months after the date of delivery ]