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一种旧建筑改造用升降装置

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First Author:Shenjian Hu

Disigner of the Invention:chen Yan,dengwei

Authorization number:ZL 2017 2 0050241.6

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Address: No.2 Linggong Road, Ganjingzi District, Dalian City, Liaoning Province, P.R.C., 116024

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