The National Library of Technology (NTK) has a long tradition of collecting grey literature on the national level. NTK became SIGLE system partner in the 1980s and from 2008 it has been the coordinator of the National Repository of Grey Literature (NRGL). NTK has created a grey literature partnership network in the Czech Republic. Over 130 institutions dedicated to research, science, education, culture etc. participate in this network and provide grey literature to the NRGL. NTK manages cooperation among these institutions and NRGL, provides methodology and standards, and deals with the legal aspects of repository management and collecting grey literature. We have created a model of the main parties involved in collecting and publishing grey literature in order to gain a better insight in the structure, and to enhance further cooperation. We defined the role of partners, type of participants, services, and tools used for grey literature publishing. In our poster, we would like to present the Czech national model as an inspiration for institutions in other countries.