幻灯片 1 - Aitken Spence Elevators · 2017. 7. 27. · A core renovation of the traction system:...
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幻灯片 1 - Aitken Spence Elevators · 2017. 7. 27. · A core renovation of the traction system: Conventional steel rope is replaced by greener, lighter, tougher, and more flexible