[Class : 9] Air Pollution Control And Monitoring Equipment; Namely, Mid Frequency And High Frequency Power Supply For Electrostatic Precipitators, Transformer Rectifier (Tr) Control Cabinets, Rapper Controls, Communications Interface (Can Transceiver), Voltage Dividers, Transducer Boxes, Scr Assemblies, Tr Output Bushings And Diode Stacks, Current Limiting Reactors And Transformer Rectifier Sets[Class : 37] Air Pollution Control And Monitoring Equipment Troubleshooting And Repairs: Installation And Start Up Of Air Pollution Control Control And Monitoring Precipitator Inspection Services; Air Pollution Control And Monitoring Equipment Training Services