Dow Chemical Company - Dow Membranes 
Dow Membrane BW30FR-400/34 
Chengfeng Valve - Control Valve for Water Treatment System 6T Filtration Fully Automatic Valve 
Chengfeng Valve - 5T Co-current Softening Electric Valve for Water Treatment System Control Valve 
Dow BW30-440i reverse osmosis membrane from the United States 
Beijing Yuanlai Resin Tank 
New Deutz metering pump 
HY-D water treatment tank 
FRP softening resin tank 
HY water treatment tank series 