酚醛塑料管 PF pipe

酚醛复合风管系统 ZRF

彩钢酚醛复合风管 ZRL

双面彩钢酚醛复合风管 ZRCS ; ZRCF

酚醛复合风管 phenolic-aluminium foil compound airduct

酚醛超级风管系统 adphoam superduct system

铝箔酚醛复合风管 JRPF

新型酚醛玻璃钢管 New type phenolic glass reinforced plastic tube