Is a production license required to manufacture PH, conductivity, and dissolved oxygen sensors at present?
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Regarding pressure and temperature, we know that it used to be referred to as a production license, but now it’s called type certification. Are there any such requirements for water treatment instruments?
For this specific product, you can refer to and compare it with the \"Catalogue of Measuring Instruments Subject to Regulation under Law in the People’s Republic of China (Type Approval Section)\». Those that fall within the scope of this catalogue are required to meet relevant regulations; whereas measuring instruments not listed in this catalogue do not need to obtain a measuring instrument license, type approval, or inspection for imported measuring instruments.
Dissolved oxygen requires PAC; the others do not