Zibo Huihua Chemical Co., Ltd. is a share holding company founded on the original Zibo Chemical Plant which specializes in the production of lubricating oil additives. It is among the primary supplier unit network of PetroChina to supply "three agents" for refining and chemical company”. Ten years since its founding, it has been keeping a very close coordination relation with domestic authority R&D institutions like Institute of Petroleum Processing, PetroChina Lubricating Oil Research and Devel...