Tender For corrigendum : supply and installation of puf insulation and frp resin - puf insulation & frp resin, supply and installation of different size of puf insulation supports (50 mm thick, 120 kg/m3 density) for the chilled water pipes, including removal of old sand-plaster and old existing wooden pipe support., supply and installation of fiberglass reinforced polymer frp resin with all required chemicals for air handling units base coating.