维修及安装铁路车辆部件如压缩机，空气阀，轴承，联轴器，气缸和管道。

Repair and install railway car parts such as compressors, air valves, bearings, couplings, air cylinders and piping.

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汽车、摩托车标牌及零部件打标、如车身、车架、底盘、连杆、发动机、气缸等列印编号、名称、商标等内容。

Markmaking on the part in the motorcycle and automobile, e. g. body, frame, chassis, connecting rod, motor, cylinder with serial number, title, trademark and scutcheon, etc.

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