Company Description
handong dongyue chemical co., ltd., shandong dongyue chemical co., ltd is the largest manufacturer of R-22, r-23, r-32, r-142b, r-152a, r-404, r-407c, r-410a, r-415b ,r-418a, POLYTETRAFLUOROETHYLENE(PTFE) SM031, SM021, DE241 and all kinds of fluorine salt.