September 19th

Sonnen won the competition of the determination comparison with the import apparatus, with three rounds comparative determination results of the determination recycling rate of 99.1%, 99.2% and 99.2%. While the recycling rate results of FOSS K2300 were 99.1%, 99.2% and 99.1%, results of those azotometer import from other countries were all between 95% and 98% and no results of other China domestic manufacturer was higher than 95%.