Good reason: China is a railway equipment manufacturing industry, one of the duopoly, its main business, including electric locomotives, diesel locomotives, EMU, subway, bus, truck.

• 看好理由：公司是中国铁路制造装备业双寡头之一，旗下主营业务包括电力机车、内燃机车、动车组、地铁、客车、货车。