we are manufacuring polyamide resin for gravure printing ink only. there are two different series.one is :alcohol soluble polyamide resin,another is:co-sovlent polyamide resin. the specification is as follows: Note: When dissolving Co-solvent type polyamide resin the solid content is 40% and the solvent we use to dissolve it is Benzene and Isopropanol with a proportionality of 7 to 3.When dissolving Alcohol-soluble type polyamide resin, for 2400 type the solid content is 40% and the solvent we use to dissolve it is Ethyl Alcohol(95% purity) and Isopropanol with a proportionality of 1 to 1 while the other type of Alcohol-soluble polyamide resin the solid content is 50% and the solvent is Ethyl Alcohol(95% purity).