storm sewer manhole cover tank 风暴舱污水井盖
Cleaning items: high-rise buildings, building, plant wall repair, cleaning, painting, wall washing, large water tank cleaning, manhole cleaning.
清洗项目：高楼、大厦、厂房的外墙修补、清洗、涂装、外墙清洗、大型污水池清洗、沙井清洗等。
The air tank includes the body, safety valve, blow-off valve, pressure meter and manhole, etc.
储气罐包括本体，安全阀，排污阀，压力表，人孔等。
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