CN214556426U - 一种排水管网的管道修复用扩孔装置 - Google Patents
一种排水管网的管道修复用扩孔装置 Download PDFInfo
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Effective date of registration: 20240311 Address after: Room 305, 3rd Floor, 23 Jinxinyuan Community, Doudian Town, Fangshan District, Beijing, 102400 Patentee after: Beijing Jingnan Juyuan Sewage Treatment Co.,Ltd. Country or region after: China Address before: Building 1, Chenjia Village, Chenggong Community, Lukou Street, Jiangning District, Nanjing City, Jiangsu Province, 210000 Patentee before: Nanjing Hongzhan Construction Co.,Ltd. Country or region before: China |
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