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shandong nuofang electronic technology co., ltd. was established in november 2011 and is located in shandong university national university science and technology park. shandong nuofang is a r&d enterprise with 110 employees, 53% of r&d personnel, and a total of 90 authorized intellectual property rights, including 28 domestic invention patents and 17 foreign invention patents; it has been rated as a national specialized and new "little giant" enterprise, high-tech enterprise, provincial gazelle enterprise, provincial science and technology leading enterprise, etc.; its leading products are multi-core particulate matter sensors, remote dust particle counting, atmospheric dust concentration detection and multi-channel particle spectrum sensors, with internationally advanced technology, realizing import substitution, providing downstream enterprises with core components, and applied to environmental protection, industrial environment, catering fume, laboratories, clean rooms, factory workshops and other places that require particulate matter concentration monitoring, and exported to more than 20 countries. NON ultrasonic level meter-langfang hongrui yicheng technology co., ltd.