Gleitsmann Security Inks (GSI) has been a trusted, innovative provider of highly secure, durable and efficient inks for government entities worldwide since 1847. We continuously strive to improve our products, meeting latest requirements from our customers, i.e. Central Banks, State Printworks and Commercial Security printers. Customer centricity is not just a buzzword for GSI but has highest priority in every aspect of our operation. Our technical and commercial customer service, operating from our headquarters in Berlin, provides support within hours from receiving a customer request. Besides our standard intaglio, offset and numbering inks we also provide cost efficient varnish solutions and an environmentally friendly series of silk-screen colours. Our products are today used by more than 40 international customers.