Qingdao Hengyuan Technology Development Co., Ltd. was established in October 2000. It is a professional company engaged in the research and development, production, sales, and provision of technical consulting services for environmental protection, flow measurement and control, and safety monitoring instruments. It is an important domestic high-tech enterprise for the research and production of environmental protection instruments and flow standard instruments, and a supporting unit of Shandong Aerosol Measurement and Control Technology and Equipment Engineering Technology Center. The company has an experienced R&D team and modern flow laboratories, aerosol expert workstations, and has established long-term scientific research cooperation relationships with research institutes and renowned universities such as the Chinese Academy of Environmental Sciences, the Chinese Institute of Metrology, Nankai University, and Ocean University of China. In 2008, the company's technology center was recognized as the enterprise technology center of Licang District. In 2011, the enterprise passed the ISO9001 quality management system certification, and in 2012, it was recognized as a high-tech enterprise. The company also participated in the drafting of multiple national standards and calibration regulations such as JJG 586-2006 soap film flowmeter and JJG 943-2011 total suspended particulate matter sampler, as well as the implementation of major national scientific instrument projects such as "Research and Development of Complete Instruments and Equipment for Aerial Aerosol Measurement". The company adheres to a market-oriented business policy and follows the path of innovative development that combines government, industry, academia, and research. Based on the fields of environmental protection, traffic management, and specialized services, we innovate and develop new products. We will focus on developing products related to five technical fields, including environmental monitoring, emergency monitoring, flow measurement and control, microbial monitoring, and aircraft. Implement the development strategy of talent driven innovation driven enterprise development and brand driven enterprise development, and strive to contribute more high-quality products and services to society.