Supply of Digital Base / Mobile Transceiver Set (MOBILE RADIO), Volleyballs as per IS 417:1986, Digital Repeater Set (RADIO REPEATER), Digital Handheld Transceiver Set (HANDHELD RADIO), Portland - Pozzolana Cement (Fly Ash Based) for Bulk Buying as per IS 1489 (Part 1), Reverse Osmosis based Point of Use Water Treatment System for Drinking Purposes as per IS 16240, Pre - School Education (PSE) Kit for The State of Bihar, Reverse Osmosis based Point of Use Water Treatment System for Drinking Purposes (V2) as per IS 16240, Ceramic Fibre Blanket Insulation as per IS 15402, Reverse Osmosis based Point of Use Water Treatment System for Drinking Purposes (V3) as per IS 16240