金属枪体，使用方便，喷管顶端部位与顶针的密封采用软性材料密封，经济实用。
Metal rifle body, soft seal between the top of the nozzle and the needle, ready for use. Economical but last...
使用具有竞争力的检修井能够防止喷管问题的发生。我们生产的检修井永远不会沉降和下沉。也不会产生波纹管塌陷的问题。
Prevents nozzle problems associated with settling of all competitive below-grade manholes. Non-settling, never-sink manhole. No problem with bellows collapsing unlike competitive products.
金属枪体，使用方便，喷管顶端部位与顶针的密封采用软性材料密封，经济实用。
Metal rifle body, soft seal between the top of the nozzle and the needle, ready for use.
金属枪体，使用方便，喷管顶端部位与顶针的密封采用软性材料密封，经济实用。
Metal rifle body, soft seal between the top of the nozzle and the needle, ready for use.
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