本系列產(chǎn)品是根據(jù)相關標準和結(jié)合公司現(xiàn)行設備情況、技術(shù)水平和近幾年用戶對產(chǎn)品結(jié)構(gòu)需求的變化進行設計的。適用于相對封閉或人員集中的重要建筑和設施內(nèi)通道照明、應急廣播、等。客戶可參照我公司公布的企業(yè)標準進行選擇。具體型號有：BBTRZ、BBTRQ、NG-A(BTLY)、BTTRZ、BTTVZ、BTTWY、BTTWV、BTTE、RTTW等。

　　This series of products are designed according to relevant standards and combined with the company's current equipment conditions, technical level and changes in product structure needs of users in recent years. It is suitable for passage lighting, emergency broadcasting, etc. in important buildings and facilities that are relatively closed or where people are concentrated. Customers can choose according to the corporate standards published by our company. Specific models are: BBTRZ, BBTRQ, NG-A (BTLY), BTTRZ, BTTVZ, BTTWY, BTTWV, BTTE, RTTW, etc.