MHY32 矿用抗拉电缆 矿用通信电缆MHYA32 MKVV32 MHYA32 MHY32 MHY32 矿用抗拉电缆 矿用通信电缆MHYA32 MKVV32 MHYA3 MKVV|天津市电缆总厂第一分厂