Sinomeasure SUP-DY2900 Optical dissolved oxygenmeter ga-eji na Hanchuan Yinlong Water affairs Limited (Nke China Water Affairs Group).
China Water Affairs Group Limited bụ ụlọ ọrụ na-enye mmiri nke hiwere isi na Hong Kong.Ọ bụ ụlọ ọrụ mmiri izizi depụtara na Hong Kong, ọ bụkwa naanị ụlọ ọrụ Hong Kong depụtara na-elekwasị anya na azụmaahịa mmiri.
