Dezhong was founded in 2001。We focus on the developing and producing of expansion tank,engine hose,vent tube, exhaust valve and other engine cooling and heating system products.We have passed ISO9001:2015, IATF16949:2015and SA8000. We have also achieved some honors, we are the NATIONAL HIGH-TECH ENTERPRISE,ZHEJIANG MADE enterprise,Provincial R&D center and so on.