1、Pre-treatment-reverse osmosis-water tank-sunbed-shadow bed-mixed bed-purified water tank-pure water pump-ultraviolet sterilizer-refined mixed bed-precision filter-water objects

2、Pre-treatment-level 1 reverse osmosis-dosing machine (PH regulation)-intermediate water tank-level 2 reverse osmosis-purified water tank-pure water pump-ultraviolet sterilizer-0.2 or 0.5 μm precision filter-water objects

3、Pre-treatment-reverse osmosis-intermediate water tank-water pump-EDI device-purified water tank-pure water pump-ultraviolet sterilizer-0.2 or 0.5 μm precision filter-water objects

4、Pre-treatment-reverse osmosis-intermediate water tank-water pump-EDI device-purified water tank-pure water pump-ultraviolet sterilizer-refined mixing bed-0.2 or 0.5 μm precision filter-water objects