MASTERCARGO INC. Freight,Customs,Cargo,Customs Broker,Import ,Export,Customs Brokerage,International Import,customs broker us,new york customs broker,customs broker house,international shipments,international cargo,international recieving MASTERCARGO INC. Customs Brokers. US Customs C-TPAT info. Client Login. We strongly urge all of our trade partners to participate in the U.S. Customs C-TPAT cargo …