客户需求如下:
a) 100-pair x 0.9mm, steel wire armoured with CMB(Chemical Moisture Barrier), flame retardant copper cable
b) 50-pair x 0.9mm, steel wire armoured with CMB(Chemical Moisture Barrier), flame retardant copper cable
c) 25-pair x 0.9mm, steel wire armoured with CMB(Chemical Moisture Barrier), flame retardant copper cable
请问上面是什么电缆?CMB是什么?
这是什么类型的电缆呢?有相应的标准吗?想学习一下。
谢谢!