... world.5). Easily assembling with smooth suface, and without gap when fitted together.6). High intensity,corrode-resisting ... is perfect, which can resist 25KV voltage without puncture, therefore, there is without any electric danger of LAIFUDA conduit and trunking. ... Moreover, with the advanced recipe and technique, there is without any concern about aging. 3.Perfect fire resistanceLAIFUDA PVC conduit ...