The special economic zone is an object of infrastructure of the clusters and combination of clusters. Special economic zone means a key role in the development of the regions. “The literature contrasts over two potential types of agglomerating forces: localization and urbanization” . “A strong cluster environment improves the level of employment in a regional industry” . Researchers told that “a special economic zone is an area in which a comparatively free management system and other conditions are in place to ensure rapid economic transformation and development” . At the same time according to the other researchers “cluster activities can survive even in harsh environments with weak formal institutions and limited infrastructure” . Researchers shows us the effect of synergy as “the SEZs are closely linked to domestic enterprises and industrial clusters through supply chains or values chains.