Gem Bids For 2319 Supply Of Stores For Water Drainage System Orginary Portland Cement 43 Grade Coarse Sand Dimapur Stone Aggregate Graded 10 - 20 Mm Stone Aggregate Graded 20 - 40 Mm Stone Aggregate Graded 40 - 63 Mm Precast Cement Concrete Block Of Size 400x200x200mm Water Profing Compound