| No. | Name | Function | Remark | 
| 1 | Raw water tank | Store water, buffering pressure, overcome instability ofsupplying water by pipe, ensure to supply water stably and continuously for whole system | 
Customer provide for
 themselves, because big size will result in expensive freight.  | 
| 2 | Raw water pump or called booster pump | Provide needed pressure for every pretreatment filter | 
We can provide CNP
 pumps or Grundfos pumps  | 
| 3 | 
Mechanical filter /quartz sand
 filter /sand filter  | 
We use fiber glass or stainless steel vessel as housing, fill quarts sand, it can filter big particles impurities,suspended substances, colloids etc. | |
| 4 | Activated carbon filter | 
We use fiber glass or stainless steel vessel as housing, fill activated carbon, remove color, odor, residual chlorine
 and organics substances.  | 
|
| 5 | 
Security filter /pp filter / sediment
 filter  | 
prevent large particles, bacteria, viruses into RO
 membrane, accuracy is 5 micron,  | 
|
| 6 | 
High pressure
 pump  | 
Provide needed working pressure for RO system, ensure
 production capacity of pure water.  | 
CNP pump, Grundfos
 optional  | 
| 7 | 
RO(reverse
 osmosis) system  | 
Can remove particles, colloids, organic impurities, heavy metal ions, bacteria, virus, heat source etc. harmful
 substances and 99.999% dissolved salts.  | 
RO membranes USA
 Filmtec Dow  | 
| 8 | 
UV/ Ozone
 generator  | 
Kill bacterials in water. UV for direct drinking water.
 Ozone generator for bottle water  |