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blue star sales and serivce
we are blue star sales and service dealer for air conditioner, air conditioning system (package unit). hvac contractor.
intelligent transportation system for smart cities
zero-sum its solutions is a leader in the development and implementation of intelligent transport solutions. our systems can be used by government agencies, traffic police, transport authorities for the regulation and optimization of traffic.
supplier of unarmed security guards
we supply unarmed security guards in kolkata area and howrah area. at present we are engaged with cesc power statins since 2005.
refrigerator air conditioning (rac) services and maintenance
all types and company of split, window, cassatte, washing machine, freeze repair and maintenance and amc (annual maintenance contract) are done here.