jining chengguang meibo chemical co., ltd shandong chenteng international trade co., ltd. shandong chenyang new carbon material co., ltd. jining chenguang power co.,ltd. jining chenguang thermal power co., ltd. jining chenguang meibo chemical co., ltd. jining chenxing carbon co., ltd. jining keneng new carbon material science and technology ltd. jining jitan import & export co., ltd. jining rencheng rongxin petty loan co., ltd. jining gaosong real estate development co., ltd.