Research summary of cable channel fire extinguishing technology LIU Sanwei, HUANG Fuyong, GONG Liang, DUAN Xiaoli, CHAO Yafeng, DUAN Jianjia and YUE Yishi E3S Web Conf., 233 (2021) 04022 Published online: 27 January 2021 DOI: 10.1051/e3sconf/202123304022