Parsian seismograph is the leading company in design and manufacturing geophysical data loggers in Iran. The initial Idea of establishing this company was production of seismic instruments inside the country. This company using distributed technologies inside the country, always try to open a new era in geophysical science with combining electronic, mechanic, and computer sciences which the result is achieving technology of manufacturing geophysical instruments. Since 2001, we come a long way to this point which the quality of our products can withstand with the best instruments in the world. The company is also active in delivering technical supports in geophysics and conducted many important projects.