... 5kw 1pole/3pole1. Anti-corrosion: the use of synthetic resin shell, spare parts, the use of stainless steel and other corrosion-resistant ... centrifugal pumps, submersible pumps can be used on water use;3. Use of an independent water-cooling circulation system, even if ... design (machine 19kg), can be placed anywhere to use, and the use of water cooling and sealing Fangzao design, almost no noise ...