The factory attaches great importance to product quality and has certificated by ISO9001, TUV, SGS and other famous authorities, and is committed to managing production quality with the highest quality system standards in the industry.
With rigorous quality control and endless innovation, Qingdao Zhongjia will continue to develop along the road of specialization and internationalization. Committed to becoming a century-old manufacturing enterprise that leads the development of the industry, creates commercial value, and builds transportation safety together.