Section 2(1)(b) in West Bengal Single Window System (Management, Control and Miscellaneous Provisions) Rules, 2017
(b)"agency" means single window agency, namely, Silpa Sathi established under the aegis of the West Bengal Industrial Development Corporation Limited which is an incorporated body under the Companies Act, 2013 (No. 18 of 2013), to provide services required for setting up industries and operating business in the State of West Bengal through Single Window System;