Japanese trading house Mitsubishi Corp said it is entering Australia's diesel market by building a $103 million gas oil import terminal to tap growing demand and as a closure of several refineries has squeezed domestic supply of the fuel. Mitsubishi's move comes as Australia is turning into a playground for global oil traders, who are snapping up storage tanks and terminals as they bet on it becoming Asia's top importer of oil products, with demand rising and old, inefficient refineries closing. "The terminal will be the foundation for Mitsubishi to launch a diesel fuel import, sales and distribution business in Australia which it expects to show robust growth on the back of increasing demand in energy, resource, transport and industrial sectors," it said in a statement on Tuesday.