![SMART SENSOR AR8010 Written test dissolved oxygen instrument [Discontinued]](http://img.nbchao.com/imgs/100/2019/07/05/1333120900786861.jpg)
![SMART SENSOR AR8010 Written test dissolved oxygen instrument [Discontinued]](http://img.nbchao.com/imgs/800/2019/07/05/1333120900786861.jpg)
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[Statement] The pictures are for users' reference. Due to product upgrading or shooting level, please refer to the real object