Rezvanshahr Sang Alvan and Alvan Nama Industrial Complex was established in 1991 with management of Mr. Esmaeil Amini in the field of producing and processing ornamental and construction stones. The first phase of this complex was utilized by relying on God and using the newest equipment of the time to produce travertine and marble, and its most important achievement was to export stone to neighbor countries such as Kuwait, Saudi Arabia and former USSR.