邮戳虽小,却能包罗万象。戳上有奇花异草、飞禽走兽,还有江河湖海、崇山峻岭,有车站、码头,还有铁路工厂。铁路工厂是专门为铁路制造和修理机车车辆等装备的企业。其资产规模一般都在数亿元以上,从业人员少 Postmark is small, but can cover everything. There are stamps on exotic flowers, birds and animals, there are rivers and lakes, mountains, mountains, a railway station, docks, as well as railway factories. Railway factory is specifically for the manufacture and repair of railway rolling stock and other equipment companies. Its asset size is generally in the hundreds of millions of dollars or more, employing less