>> equipment made by a chinese company called zte. >> these are all zte systems. >> for this area, all your customer base, effectively everything they use, their phone, data, internet comes through this room. >> that's correct. >> and that's a problem. >> stocks falling sharply an trade tensions with china. >> an executive arrested in canada. >> sa massive blow to zte. >> zte and its rival washingthu enormous telecon firms. they make vital hardware that connects phone calls and provides access to the center. they worry huawei and z terks communications devices installed all over the world can ...