国产偷v国产偷v亚洲高清,国产日韩一区二区三区视频,色88888久久久久久影院,中文字幕aⅴ人妻一区二区 ,中文字幕va一区二区三区

Resistance fire fire-resistant Wire

Implementation standards:Product implementation GB / T 5023 "rated voltage 450 / 750V and below PVC insulated cables", JB / T 8734 "rated voltage 450 / 750V and below PVC insulated cables wires and cords" and GB / T 1966…Detail

Fire-resistant Wire

Product Usage:This product is suitable for low-voltage power supply system in publicfire, fire safety requirements of very high places, especially in somehigh-rise buildings, oil platforms, mines, metallurgy, ships, power stations,subways, …Detail