Tongyu Heavy Industry Co., Ltd. ,a national public listed high-tech company(Stock Code: 300185), locates in Yucheng, Shandong province of China. With total asset 10.1 billion CNY and 11 subsidiary companies,Tongyu owns ISO 9001:2015,ISO 14001:2015, OHSAS 14001:2007,ASME MO certificate,CNAS(ILAC) test center, CNNC Qualified supplier certificate, Boiler & vessel Forging Registration certificate, Military Qualification certificate, nine shipping classification certificate (CCS、BV、DNV-GL、RINA、ABS、NK、LR、KR、RS). From melting, casting & forging, heat-treatment, machining,Tongyu has complete industrial chain for heavy forgings and castings .