本产品是实现了高效安全、便利和美观集合一体。目前开发生产的产品规格齐全，有三大类型几十个型号，广泛用于地铁、高铁、城市地下管廊、建筑工程等领域。

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.