计算机、计算机配件楼宇对讲;可视闭路;网页制作;通信工程;机电产品;电机设备;电脑软硬件开发及维护;传感器；TV-1位移振动传感器；KASB5401数字温度计。Dealin:Answerofastoriedbuilding;Sensor;TV-Radio;Executionforweb;Communicationengineering；machineandelectricproduct;Dynamo&Motorequipment;Maintenanceandexploitationofsoftandhardwareforcomputer;TV-1Displacementvibrancysensor;KASB5401Numeralthermometer