Lifts and service lifts. drawn steel wire for elevator ropes. specifications.

载客电梯和货梯。电梯缆索用冷拔钢丝。规范。

youdao

Lifts and service lifts. drawn steel wire for elevator ropes. specifications.

载客电梯和货梯。电梯缆索用冷拔钢丝。规范。

youdao