Repair and Overhauling Service- One time servicing of PCBs of KELTRON Make 90KVA Pony UPS as per AnnexureA 16 Nos; KELTRON; Yes; Service Provider Premises, Repair and Overhauling Service- One time servicing of PCBs of KELTRON Make 200KVA UPS as per AnnexureB 19 Nos; KELTRON; Yes; Service Provider Premises