CHICAGO--(BUSINESS WIRE)--JNS Holdings Corporation (OTC: JNSH), an owner/operator & installer of electric vehicle (EV) charging stations and commercial licensed electrical contractor specializing in all types of controls and services throughout the Chicagoland area, today announced that JNS has received contracts to provide fire alarm detection installations at the Ontario, Sears, Dearborn & Plymouth substations to upgrade the existing fire alarm systems. The updated systems will includ