About Us
关于我们
Zhejiang Dongou Filter Manufacturing Co., Ltd. (Wenzhou Dongou Microporous Filtration Co., Ltd.,) is a national high-tech enterprise specializing in the research, development, application and production of filtration technology. The production bases are located in the Shuige Industrial Park and Qibaiyang Industrial Park in Lishui City, Zhejiang Province, with two plant factories, covering a total area of over 100 mu. The company currently has more than 400 employees, with an annual output value exceeding 500 million yuan.
Founded in 1986, the company is commited to the promoting and producing of “microporous precision filtration technology and device system”, providing tailored filtration solutions for industries to achieve energy saving, emission reduction, energy efficiency improvement and green production. Among our products, the polymer sintered microfiltration membrane produced by our company combines the remarkable characteristics of high temperature resistance, strong acid and alkali resistance, long service life and low cost, making it highly favored in fields such as new energy, pharmaceuticals, food, chemicals and environmental protection.
400 +
Number of employees
50 items+
Professional qualifications
500 million yuan
Annual output value
News
新闻动态
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Recently, our company received ASME “U” steel stamp authorization and “NB” steel stamp authorization certificate from the American Society of Mechanical Engineers (ASME), marking the succesful completion of the Joint Review and the NB registration in the United States. The acquisition of these two qualification certificates adds new splendid glory to the company's international pressure vessel manufacturing and quality system operation. The ASME standards serve as the certification basis for the entire process of pressure vessel design, manufacturing, and inspection, while the NB registration is required to maintain the integrity and safety of pressure vessels after they are put into operation. Before entering the international market, domestic pressure vessel manufacturers must acquire market access to corresponding coun... -
On October 7th, our company successfully held the kick-off meeting for the Management Innovation Project. This meeting is an important measure taken by our company to further improve the management level, adapt to the rapid changing market environment and expand the development space for our enterprise. The meeting was hosted by Xu Wei, Manager of Human Resources Department, and was attended by Zhou Wenhao, Deputy General Manager of the company, who delivered the speech. Department heads from various departments gathered together to attend the event. In his opening remarks, Mr. Zhou emphasized the importance of management innovation and the significance of launching this project. He pointed out that in the face of fierce market competition, the company must achieve sustainable development by continuously exploring and introducing new management concepts and ... -
“Zhejiang Manufacturing” is a brand mark initiated by Zhejiang Province to make “Zhejiang Manufacturing” a brand mark with strict certification standards, aiming at the domestic first-class and international advanced level. Its technical indicators need to achieve “domestic first-class and international advanced”, that is, If there are no similar products internationally, the product must reach domestic leading standards; if similar products exist internationally, the product must reach advanced international standards. Due to this, the "Zhejiang Manufacturing" standard has set strict requirements for the participating enterprises, specifying that only industry-leading companies can take part in its formulation. On September 13, 2023, Zhejiang Dongou Filter Manufacturing Co., Ltd. successfully held the "Zhejiang Manufacturing" stan... -
In the golden autumn, with the fragrance of osmanthus filling the air, Mr. Su, Senior Vice President of the largest battery recycling company in the U.S., along with a delegation of five, visited our company on the morning of September 22. As the first and largest battery recycling enterprise in the U.S., the purpose of this visit was to discuss specific details regarding delivery schedules and after-sales services for the Phase I project procurement contract. The visit was attended by senior executives of Dongou, including General Manager Song Zhiji, Deputy General Managers Song Zhisheng and Zhou Wenhao. Mr. Song extended a warm welcome to the American guests who had traveled from afar and introduced them to the local culture and customs of Lishui. The delegation then toured the company’s exhibition hall and production workshops, where they were giv...
Engineering Case
工程案例
R & D Experience of All-In-One Unit for Filtrating, Washing and Pressure Drying
Project Background:
Jinchuan Group, located in the northwest of China Gansu, known as the “Nickel Capital of China”, is the third largest nickel metal producer globally and the first in Asia. In the process of nickel and nickel salt production, there are numerous stages of solid-liquid separation and powder washing.
The Invention of the Filter Concentrator
Project Background:
In 2006, Xiamen Tungsten submitted a proposal to add a concentrator to the ternary precursor reactor. Based on market research feedback from previous years, several enterprises expressed interest in using similar equipment, which brought attention to the project we were developing. After understanding that this was for the production of precursor materials for new energy lithium batteries, and considering the tremendous market prospects for this new material, our technical department established a project team to develop a new product project for the filter concentrator.
Technological Revolution Changes Industry Standards
Project Background:
In 1998, a Taiwanese environmental entrepreneur came across a water purification company in Wenzhou, Zhejiang Province, China that specialized in filtering technology. Intrigued, he brought samples of coal yard wastewater from power plants to Dongou’s testing site for filtration experiments.
