KUALA LUMPUR, July 23 (Bernama) -- Malaysia Airports Holdings Bhd (MAHB) subsidiary, Malaysia Airports Consultancy Services Sdn Bhd (MACS), has signed a memorandum of understanding (MoU) with Nagamas Enterprise (HK) Ltd (NEL) to examine the possibility of providing airport operations, management and technical consultancy services to the Yongzhou Lingling Airport in Hunan, China.