MHYV|煤礦用通信電纜|MHYV 煤礦用聚（氯）乙烯絕緣和聚氯乙烯護套電話電纜 pvc insulatedpvc sheathed telephone cables for use in mines 產品用途:本產品適用于固定敷設在礦井作通信干線及分線箱與電話機連接線 scope of application:this product is fit for being laid in fixed placed in mines for the connection of communication trunk linesjunction boxtelephones. 執行標準 standards implemented: q/3210hl29-2003 型號、名稱及使用范圍 model desc-riptionsuse scope 型 號 model 名 稱 desc-riptions 使 用 范 圍 scope of application mhvv（huvv） 煤礦用聚氯乙烯絕緣阻燃聚