材质：UL合格之NYLON 66(灰色），防火等级94V-2

Material: UL qualified NYLON 66 (gray), fire rating 94V-2

特点：线槽两端设有连接点（公母扣），可无限延长。

Features: There are connection points (male and female buckles) at both ends of the trunking, which can be extended indefinitely.