DHHI has perfect quality management system. In 1993, it started to fully implement the standard GB/T19001-S09001 and was the first
company to obtain the quality system certification in the fellow trade. lt obtained the "Perfect Measuring and Detecting System Certification" in 1996 and successively passed the certification of 9 classification; societies (UK, China, USA, Japan, Germany, South Korea, France, Italy, Norway). lt was awarded the title of "Excellent Quality Management Enterprise" by the Ministry of Mechanical Industry of China in 1998, and hundreds of products were awarded the titles of "China Famous Product" and" China National Excellent Product".
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