Weatherproof electrical and instrumentation products under the Pustron brand, push-button stations, FRP control junction boxes, distribution boards, and MCC/PCC switchgear panels, are manufactured by Shrenik and Company for cement, power, oil-refinery, and pharmaceutical customers. Founded in 1972 and headquartered in Ahmedabad, it exports to the Middle East and Africa. ISO 9001:2015 certified, with ERDA and Intertek (ASTA) approvals, the company emphasizes maintenance-free GRP/FRP enclosures and inventive solutions.