Bridge, the viaduct and Port Machinery are all outdoors under the sun and the rain, so they were prone to rust and corrosion which will seriously reduce the safety factor.
大桥、高架、港口机械长期处于户外日晒雨淋，它们均极易生锈，很快就会发生锈蚀现象，大幅降低了安全系数。
Such as aerospace, construction and decoration, port machinery, rail transportation, electric equipment, low voltage switch, dyeing and printing machinery, food machinery, ships and yachts.
如航天、建筑装潢、港口机械、轨道交通、电气化设备、高低压开关、印染机械、食品机械、船舶游艇等。
The company's business scope to the port, ships, chemicals, machinery manufacturing, oil, textile and other related fields.
公司的业务范围涉及到港口、船舶、化工、机械制造、油田、纺织等相关范围。
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