本產品是實現了高效安全、便利和美觀集合一體。目前開發生產的產品規格齊全，有三大類型幾十個型號，廣泛用于地鐵、高鐵、城市地下管廊、建筑工程等領域。

This product is a combination of highefficiency，safety， convenience andbeauty. At present, the productspecifications for development andproduction are complete. There aredozens of models of three major types,which are widely used in subway, high-speed rail, urban underground pipecorridors, and construction engineering.