The steam heating and the electric heating may select, under draining water USES drains water, the available hose directs to the trench, maintains indoor clean.
蒸汽加热及电加热可选用，排水采用下排水，可用软管引至地沟，保持室内清洁。
2
The new-type of hose pulsating pump is used for underground face draining and sump cleaning.