sentences:  The other corridors are Iskandar Malaysia in Johor and the Northern Corridor Economic Region (NCER) that covers the states of Penang, Kedah, Perlis and Northern Perak.The ECER development program spans 12 years, beginning in 2007, and involves Public-Private Participation (PPP).The master planner for ECER is Malaysia-owned oil and gas company, Petronas.