What kind of company is Zhejiang Du Nan Holdings?

1. Introduction of Du Nan Artificial Environmental Equipment Co., Ltd. Zhejiang Du Nan Artificial Environmental Equipment Co., Ltd. is a listed company specializing in the production of various types of electric refrigeration central air conditioning hosts, terminal equipment and industrial air conditioning dust removal. It is a national standard drafting unit of central air conditioning, a national key high-tech enterprise, a national torch plan project implementation unit, a patent demonstration enterprise in Zhejiang Province, and a key high-tech research and development center in Zhejiang Province. The company passed ISO 9001; 2000 international quality system certification, ISO 1400 1 environmental management system certification and product CCC certification. The central air-conditioning products produced have been recognized as national key new products, national high-tech products and famous brand products in Zhejiang Province by the national authoritative departments, and have won many national patents, becoming the first national brand of central air-conditioning. At present, they have three subsidiaries. 2. Brief introduction of Du Nan Company Our mission: to strive for national economic prosperity and improve the quality of human life. Our vision: to create a leading position in the industry and build a century-old shield. Our motivation: * * the same shield, * * the same cause, * * the same interest, core values: honesty, faith, business philosophy: be prepared for danger in times of peace, never satisfied, transcend the present and grasp the future. Enterprise spirit: dedication, honesty, cooperation and creativity; code of conduct: being earnest and practical. Zhejiang Du Nan Artificial Environment Equipment Co., Ltd. is a key enterprise under China Du Nan Holding Group, specializing in the production of compressed electric refrigeration central air conditioning host and terminal products. Since its establishment, the company has made a series of achievements and honors in the domestic refrigeration industry by virtue of leading technology, scientific management, first-class product quality and service quality-Du Nan central air-conditioning products have been rated as national key new products and Zhejiang famous brand products, and won many national patents; The company was rated as the key high-tech enterprise of the National Spark Plan and included in the implementation unit of the National Torch Plan project; The company has been rated as AAA-level enterprise by Zhejiang Agricultural Bank year after year; Entrusted by the National Refrigeration Equipment Standardization Technical Committee, the national standard of Household Central Air Conditioning (GB18430.2); ) exclusive drafting. Related products have passed the national safety certification (CCEE) and the national compulsory certification (CCC certification). The products have been widely praised by users, and have been selected into China Academy of Art, China Textile City Development Building, China Unicom Company, Shougang Ward Building, Zhejiang Education Development Center, Shaoxing Lu Xun Memorial Hall, Wuhan Light Rail, Xiangjiang Pharmaceutical, Kangyuan Pharmaceutical and other major projects, and entered Shanghai Jinmao Building, the tallest building in Asia, becoming the only domestic central air-conditioning product to enter the building. On July 5th, 2004, Zhejiang Du Nan Artificial Environment Equipment Co., Ltd. was successfully listed on Shenzhen Stock Exchange (stock code: 0020 1 1). The company constantly builds the core competitiveness of enterprises, invests heavily in introducing first-class equipment and production technology from the United States, Japan and other countries, and constantly conducts independent technology research and development, making Du Nan central air-conditioning in a leading position in the market competition. Three American oak heat exchanger production lines, two Japanese AMADA sheet metal production lines, one American Nuoxin spraying production line and six complete machine assembly lines. At the same time, we cooperated with Hefei General Machinery Research Institute, the authoritative organization of domestic refrigeration industry, and built a volumetric air-cooled (heat pump) unit, a volumetric water-cooled chiller and a modular air-conditioning performance testing device recognized by the National Center for Quality Supervision and Inspection of Compressor Refrigeration Equipment, and established a central air-conditioning host product performance testing center. Cooperate with the Air Conditioning Institute of China Academy of Building Research to build "air volume testing device for cabinets and combined air processors" and "air volume testing device for fan coil units"; The performance test center of central air-conditioning terminal products was established by the "Precision Steel Structure Vibration Isolation Assembled Semi-anechoic Chamber and Noise Power Level Test System" which was appraised by Shanghai Electric Apparatus Research Institute. "High technology, high investment and high standard" ensure the excellent quality of central air-conditioning products in Du Nan. Du Nan Central Air Conditioning pursues the goal of putting people first and gradually establishing a technical support system with independent intellectual property rights. To this end, the company has carried out extensive cooperation and exchanges with well-known universities and scientific research institutions in China. Dunan Central Air Conditioning Research Institute was established by Dunan Company, Hefei General Machinery Research Institute, Zhejiang University, Xi Jiaotong University and other first-class scientific research institutes. A group of elites from domestic refrigeration industry have gathered, aiming at the leading level and development direction of refrigeration industry at home and abroad, and striving to ensure that Du Nan's central air-conditioning products remain technologically advanced. The new products independently developed by the institute, such as precision constant temperature and humidity machine, environmental protection cold water (heat pump) unit, split air conditioning unit with air duct supply and purification combined air treatment unit, have all passed the provincial appraisal and won high praise from industry experts. We strive for fashionable products, superior performance, energy saving, high efficiency, convenient installation and simple operation. In particular, its advanced nature, safety and reliability in high-tech applications such as intelligent control, energy saving and environmental protection, and remote telephone control functions have been recognized by authoritative experts in China, and it has been evaluated as "ahead of domestic similar products and reaching the international advanced level", and many technologies have filled the gaps in China. Quality is our personality and the life of an enterprise. Dunan people know that the quality consciousness of striving for perfection and strict quality management are the powerful guarantee for building Du Nan brand and the solid foundation for enterprise development. At the beginning of 2000, Zhejiang Du Nan Artificial Environment Equipment Co., Ltd. became the first central air-conditioning enterprise in domestic refrigeration industry to pass the ISO900 1:2000: 2000 quality system certification at one time, and took the lead in introducing TQM quality management system. Adhering to the concept of "the same society, the same homeland, the same responsibility and the same safety", we actively promoted environmental system management and successfully passed the ISO 1400 1 environmental system certification. Resources will be exhausted, and only culture will be endless. We should not only manufacture and sell goods, but also practice and popularize culture. We repay the society with the development of enterprises, make unremitting efforts for the progress of social civilization and the happiness of ourselves and our families.