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Hangzhou Donghua Power Transmission Imp. & Exp. Co., Ltd. One of the largest chain manufacturers in China, has five subsidiaries including Hangzhou Ziqiang Chain Drive Co., Ltd. Hangzhou Dunpai Chain Co., Ltd. And Hangzhou Donghua Power Transmission IMP. & EXP. Co., Ltd. etc. Hangzhou Donghua Chain Group Co., Ltd. Was founded in November 1991. The company is specialized in producing all kinds of standard chains and special chains, e. g. A or B series chains, automobile chains, stainless steel chains, combine harvester chains, heavy-duty cranked link transmission chains, stereo garage chains and maintenance-free chains etc. In recent years, it invests the capital and depends on the improvement of technology to accelerate the step of new product development and the step of technology reform. It intends to produce high strength and precision chains in order to meet requirements of the domestic and overseas markets.
"Ziqiang" brand and "Donghua" Brand chains conform to the national standard (GB), international standard (ISO) and the advanced industrial countries' Standards (JIS, ANSI, BS, DIN etc. ). "Donghua" has been registered in 63 countries all over the world and regarded as a famous trademark of Zhejiang Province. "Ziqiang" brand is approved as a famous brand of Zhejiang Province and a famous trademark of Hangzhou City. The company has the right to engage in foreign trade, passed the process inspection of Zhejiang Commodity Inspection Bureau in 2002 and became one of the first enterprises to gain the qualification of "Green Channel" for commodity inspection. 70% of products are exported to Europe, America, Japan, and South-east Asia etc. It also cooperates with global well-known agricultural machinery leaders including Johndeer, NH and Claas, etc. To provide production line chains for first-rate enterprises in the world, e. g. Bosch, etc. Its sales network covers all over the domestic market and it cooperates with many key machinery factories, e. g. By offering automobile driving chains in lot for SAIC and conveyor chains specialized for Baosteel' S production, etc. Its chain lots begin to enter metallurgy, petroleum and machinery industries.
The company has made much progress: Obtained ISO9002 Certificate of Quality Assurance System in 1996; Achieved ISO9001 Certificate of Quality Assurance System in 1999; In 2002, passed the auditing of the revised ISO 9001 Quality Assurance System, ISO 9001: 2000. In addition, the company also pays important attention to environmental protection: Made a huge investment in establishing a Wastewater Treatment Center to realize the wastewater recovery cycle. In 2002, became one of the first to obtain ISO14000 Certificate of Environmental Management System and gain the qualification of "Green Channel" of Zhejiang Province; Performed ISO 9001 Quality Assurance System and ISO14000 Environmental Management System at a time; In 2004, passed the certification of American Petroleum Institute (API). In the implementation of ISO9001 Quality Assurance System, Donghua gradually forms a complete set of normal and scientific quality management system documents, establishes a whole process of quality control system based on prevention, and builds up a continuous improvement and good circulation system to make its product quality into a steady perfection.