非金属管道加固材料 Pipes ; non-metallic pipe reinforcement materials

电力非金属管系 Electrical nonmetallic tubing

非金属管道 non metal pipeline ; non-metallic pipes

非金属管线定位功能 PWG

电工用非金属管 Electrical Nonmetallic Tubing

非金属管套 non-metallic pipe sleeve

非金属管套筒 non-metallic pipe sleeve

非金属管道接头 non-metallic pipe joints

非金属材料风管 nonmetallic duct

通风和空调设备用非金属管 non-metallic pipes for ventilation and air conditioning equipment