Shandong Zhongse Heavy Industry Co., Ltd.'s main business scope covers propane, n-butane, isobutane, isopentane, n-pentane, cyclopentane, 6 # solvent oil, isohexane, n-hexane, heptane, benzene, toluene, xylene isomer mixture, 200 # solvent oil, naphtha, petroleum ether and other products. It has become a major manufacturer of environmentally friendly solvents in China, as well as a major manufacturer of environmentally friendly hydrocarbon refrigerants and pentane foaming agents, as well as an e...