supply of manufacturing, fabrication and supplying retroreflective sign boards made up of thermoset plastic toughened moulding composite sheets of 3.0 mm thickness face to be fully covered with high intensity grade ( encapsulate lence type ) sheeting of 3m, in yellow and black or other colour combination including subject matter, message, symbols, borders, etc.as approved by engineer in charge, pasted on substrate by suitable adhesive material & with screws / rivets at 20 cm centre to centre to back support sheet, including fabrication with vertical post using glass mat & resins. as per attached drawing and rdso specifications may 2011. section. [ warranty period: 30 months after the date of delivery ] sr.section engr / td / dhilwan, punjab 334.00 sqm