[Class : 11] Clarifiers, Filters For Clearing & Cleaning Water, Reverse Osmosis (Ro), Plants For Drinking & Process, Ultrapure Water Treatment Plants For Pharmaceutical & Electronic Industry, Sea Water Desalination Plants (Swro), Demineralized Water Plants (Dm), Condensate Polishing Plants (Cpu), Sewage Treatment Plants (Stp), Grey Water Treatment Plants, Industrial Effluent...

[Class : 37] Installation / Repair / Maintenance Services Connected To Water Treatment Plants

[Class : 40] Industrial & Domestic Waste Water Treatment Services