營(yíng)口PE電力護(hù)套管,營(yíng)口PE礦用管,營(yíng)口老邊礦區(qū),營(yíng)口阻燃PE電纜管,營(yíng)口礦用PE通風(fēng)管,營(yíng)口井下PE管網(wǎng),營(yíng)口礦業(yè)復(fù)合管網(wǎng)營(yíng)口PE電力護(hù)套管與營(yíng)口PE礦用管已在老邊礦區(qū)-420米中段完成同步敷設(shè),