The Hanoitimes - When Mitsubishi Heavy Industries Aerospace was planning to build a factory to assemble wing flaps for Boeing, it looked around south-east Asia before settling on what is rapidly becoming the region’s destination of choice: Vietnam.“My first proposal was Thailand because we already have a subsidiary making airconditioners, but the wages in Thailand are already high,” said Hirotaka Masuda, the head of the MHI Aerospace Vietnam.