您要查找的是不是：
- PPR管PPR tube
- PPR管材料B4101
- 低膨胀PPR管材料的增韧增刚研究TOUGHENING AND STIFFENING OF LOW THERMAL EXPANSION PPR
- 管pipe
- 近年来另一种新型管材PPR管也开始被使用，由于其无毒、质轻、耐压、耐腐蚀，正在成为一种推广的材料。In recent years canal of another kind of new-style PPR tubal material also begins to be used, because its are avirulent, qualitative light, compression, anti-corrosive, making the material of a kind of promotion.
- 管的vasal
- 网管network management
- 管路pipeline
- 回收PPRrecycled-PPR
- PPR树脂PPR Resin
- 品管QA
- PPR方法PPR method
- 高管senior executive
- 弯管syphon
- 排气管vent-pipe
- 风管wind pipe
- 管件pipe fittings
- 配管tubing
- 热管thermotube
- 信管fuse
