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砂雨法流速控制装置

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First Author:Wang Zhongtao

Disigner of the Invention:zhaowei

Authorization Date:2014-11-04

Authorization number:ZL 2015 2 0182151.3

Pre One:砂雨法自动撒砂器
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Address: No.2 Linggong Road, Ganjingzi District, Dalian City, Liaoning Province, P.R.C., 116024

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