QINGDAO ELITE MACHINERY MANUFACTURE CO., LTD (ESG),is a high-tech company integrating the R&D, production and sales of fluid process control systems and valves. ESG has passed ISO9001，ISO14001，ISO45001 etc system certification. Since established in 2001, ESG has obtained more than 80 patent authorizations, including 8 invention patents. ESG made valves are exported to 82 countries and serve 9 Fortune 500 companies. ESG products are mainly used in three waste systems in the nuclear industry, new energy, biopharmaceuticals, semiconductor industry and industrial fluid control systems in many fields.