[Class : 19] Building Materials, (Non Metallic), Non Metallic Rigid Pipes For Building; Asphalt, Pitch And Bitumen; Non Metallic Transportable Buildings; Monuments, Not Of Metal All Included In Class 19.

[Class : 37] Installation Of Heating, Ventilation And Air Conditioning [Hvac] Systems, Installation, Repair And Maintenance Of Heating Equipment, Installation Of Heating And Cooling Apparatus, Installation Of Air Conditioning Apparatus For Use In Clean Rooms, Installation Of Ventilation And Dust Extraction Systems, Retrofitting Of Heating, Ventilating And Air Conditi...