Beijing News Jay Anderson sale: (1) multi-service telephone, video, Internet, alarm Optical, fiber optic transceivers, (2) imported and domestic fiber optic fusion splicer, OTDR, blades, electrodes, ruby ??cutting pen, red pen, optical power meter, fiber jumpers, ODF cell free welding machine maintenance, (3) to undertake: weak national security, intelligent building, room construction, system integration, system maintenance and other services.