本系列產(chǎn)品是根據(jù)相關(guān)標(biāo)準(zhǔn)和結(jié)合公司現(xiàn)行設(shè)備情況、技術(shù)水平和近幾年用戶對(duì)產(chǎn)品結(jié)構(gòu)需求的變化進(jìn)行設(shè)計(jì)的。適用于相對(duì)封閉或人員集中的重要建筑和設(shè)施內(nèi)通道照明、應(yīng)急廣播、等?？蛻艨蓞⒄瘴夜竟嫉钠髽I(yè)標(biāo)準(zhǔn)進(jìn)行選擇。具體型號(hào)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.