vector p&id piping and instrumentation diagram, 20m³/h single stage reverse osmosis water treatment equipment, clean line drawing, engineering schematic, white background, black thin lines, standard isa symbol, no shading, no 3d, 2d orthographic, clear tag number, including raw water tank, raw water pump, multimedia filter, activated carbon filter, 5μm security filter, high pressure pump, two 6-core 8040 membrane housings parallel, permeate tank, cip cleaning loop, auto flush branch, flow meter, conductivity meter, pressure gauge, pressure switch, valves, pipe size marked dn65 upvc, dn50 304 stainless steel, text labels in chinese, layout neat, technical drawing