The Structural Waterproofing Co. Pvt. Ltd., Kolkata, (CEMENT & CONCRETE WATERPROOFERS, CONCRETE & MORTAR ADMIXTURES, CONCRETE AIDS, PROTECTIVE COATINGS, MEMBRANES & IMPREGNATION, GROUTS & GROUTINGS ADDITIVES, FLOORINGS, TUNNELING & SHOTCRETE PRODUCTS, SEALANTS, TILE ADHESIVES, REPAIRING COMPOUNDS, CEMENT AIDS )