[Class : 37] Building Construction; Repair; Installation Services; Various Repair Services Such As Those In The Fields Of Electricity, Furniture, Instruments, Tools, Cleaning Of Buildings [Interior]; Interior Designing Of Buildings Such As Glass Door Fittings, Roofing, Fall Ceiling; Electric Appliance Installation And Repair; Heating Equipment Installation And Repair ;Hydraulic Fracturing Services / Fracking Services; Installation And Repair Of Air Conditioning Apparatus; Installation Of Doors And Windows; Installation Of Utilities In Construction Sites; Machinery Installation, Maintenance And Repair; Plastering; Restoration Of Works Of Art; Roofing Services; Safe Maintenance And Repair; Sanding; Strong Room Maintenance And Repair; Scaffolding; Sterilization Of Medical Instruments / Sterilisation Of Medical Instruments; Upholstering; Upholstery Repair; Varnishing; Warehouse Construction And Repair; Window Cleaning; Plumbing; Install, Establish,Conduct, Undertake, Develop, Improve And Commission Clean Rooms Including Fabrication Of Clean Rooms Walls, Ceiling, Floors And Other Components;Included In Class 37