ATHENS, May 20 (Xinhua) -- Greek Prime Minister Kyriakos Mitsotakis welcomed on Monday the first batch of China-made electric buses which hit the streets of port city Thessaloniki in northern Greece. "Their arrival signals the advent of a new Greece, which has left behind difficult times," Mitsotakis said in a press statement after inspecting the bus fleet. The first 46 electric buses manufactured by Chin