| 1. | Replacement of the air pipe for crank case ventilation system 更换引擎曲轴箱系统气嘴 |
| 2. | Design of warm air pipe for cement plant 水泥工厂热风管道设计 |
| 3. | Mining equipment . compressed air pipes . conical reduction couplings 采煤设备.煤矿器材和工具.压缩空气管.变径管接头 |
| 4. | Railway rolling stock . air pipes . coupling head for 25 mm main brake pipe 铁路车辆.空气导管.毫米主制动装置导管的管接头 |
| 5. | Railway transport equipment . air brake and air pipes . 25 mm half - couplings 铁路运输设备.空气制动装置和空气导管.毫米离合器 |
| 6. | Air piping filter 空气管道过滤器 |
| 7. | Auxiliary air piping 辅助风管路 |
| 8. | Hot air pipe 热空气管 |
| 9. | Railway transport equipment . air brake and air pipes . flexible hoses for 25 mm pipes 铁路运输设备.空气制动装置和空气导管.直径为毫米的管道用软管 |
| 10. | Railway transport equipment . air brake and air pipes . 25 mm brake - hose connecting nipple 铁路运输设备.空气制动装置和空气导管. 25毫米制动软管连接管头 |